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网课答案 4216

输出“hello world”

给定: int a,b; 以下哪些scanf的使用是正确的?

以下哪些是有效的变量名?

给定: int a,b; scanf("%d %d", &a, &b); 则以下哪些输入方式是正确的?

给定以下代码段: int a,b=0; 则a的初始值是0

写出下式的运算结果: 10/3.0*3 (如果认为结果是浮点数,请以小数点后一位小数来表示)

写出下式的运算结果: 10/3*3.0 (如果认为结果是浮点数,请以小数点后一位小数来表示)

写出以下代码执行后,t1和t2的值,以空格隔开: int a=14; int t1 = a ; int t2 = a;

写出以下表达式的结果,结果之间间隔一个空格: 6 5 / 4 - 2 2 2 * (2 * 2 - 2) % 2 / 3 10 9 * ((8 7) % 6) 5 * 4 % 3 * 2 3 1 2 (3 4) * ((5 * 6 % 7 / 8) - 9) * 10

逆序的三位数

以下语句是否可以通过编译: if ( 1<=n<=10 );

以下语句是否表示n属于[1,10]: if ( 1<=n<=10 );

写出程序的输出结果: int i,j,k; i=5; j=10; k=1; printf("%d", k>i
写出程序的输出结果: int i,j,k; i=2;j=3; k = i*j==6; printf("%d\n", k);

写出程序的输出结果: int i,j,k; i=3;j=2;k=1; printf("%d", i
以下哪个循环和其他三条循环不等价(假设循环体都是一样的)?

while循环的条件满足的时候循环继续,而do-while的条件满足的时候循环就结束了

以下代码片段执行结束后,变量i的值是多少?int i =10; while ( i>0 ) { i /=2; }

以下代码片段执行结束后,变量i的值是多少?int i = 1; do { i = 5; } while (i<17);

以下代码段的输出是什么?for ( int i=10; i> 1; i /=2 ) { printf("%d ", i ); }

时间换算

分队列

写出程序的输出:int i=1; switch ( i%3 ) { case 0: printf("zero"); case 1: printf("one"); case 2: printf("two"); }

以下哪种运算能从变量x中取得十进制最低位的数字

当需要累加一些值的时候,用来记录累加结果的变量应该被初始为:

奇偶个数

数字特征值

以下代码段的输出是: int sum = 0; for ( int i=0; i<10; i ) { if ( i%2 ) continue; sum = i; } printf("%d\n", sum);

以下代码段的输出是: int sum = 0; for ( int i=0; i<10; i ) { if ( i%2 ) break; sum = i; } printf("%d\n", sum);

素数和

念整数

以下哪句不是正确的函数原型?

以下哪个函数的定义是错误的?

对于不返回值而且只有一个int类型的参数的函数,以下哪些函数原型是正确的?

以下程序的输出是什么?void swap(int a, int b); int main() { int a = 5; int b = 6; swap(a,b); printf("%d-%d\n", a, b); return 0; } void swap(int a, int b) { int t = a; a = b; b = t; }

以下哪个选项是判断ch是否为大写字母的正确形式?

以下代码片段的输出是: int j=4; for ( int i=j; i<=2*j; i ) { switch ( i/j ) { case 0: case 1: printf(“*”); break; case 2: printf(“#”); } }

下列程序段输出结果为: int x=1, y=012; printf(“%d”,y*x );

下面程序段的输出结果是? int k; while(k!=0) k=k-1; printf(“%d”, k);

以下表达式x&&1 用在if的条件中时,和哪个是等价的:

以下哪个不是c语言的关键字?

对于以下代码: unsigned short sht = 0; sht --; 执行后,sht的值是?

以下哪个直接量是十进制的124?

对于以下代码: int i=6; if ( i<= 6 ) printf("hello\n");; else printf("bye-bye\n");; 哪句话是对的?

在代码: while ( !e ) 中,!e等价于:

下列可用于c语言程序标识符的一组是(名字间以逗号分隔):

对for(表达式1;;表达式3) 可理解为

对于以下代码: int i,j=6; 以下哪句话是对的?

对于以下代码: char ch = -1; printf("%d\n", ch); 输出结果是?

对于以下代码: int i; scanf("%d", &i); i %= 4; 执行后,i会有几种可能性?

对于以下代码: int i=6; do { printf("%d", i--); } while (0); 哪句话是对的?

对于以下代码: int i; for ( i=0; i<10; i ) printf("%d", i); for循环结束后,i的值是多少?

以下哪个for语句是错误的?

表达式ch =‘b’ ‘8’-‘3’表示的字符是:

以下代码的输出是 _____. int x=0, y=0, z=0; z = (x==1) && (y=2); printf("%d ", y);

以下代码段的结果是: int i=10; long long t = sizeof(i ); printf("%d", i);

表达式(double)(10/4*4) 的结果是_____

以下代码的输出是 : int i,x,y; i=x=y=0; do { i; if ( i%2 ) x =i, i ; y =i ; } while ( i<=7 ); printf("%d %d %d", i, x, y);

高精度小数

若有定义: int a[2][3]; 则以下选项中不越界的正确的访问有:

以下程序片段的输出结果是:int m[][3] = {1,4,7,2,5,8,3,6,9,}; int i,j,k=2; for ( i=0; i<3; i ) { printf("%d", m[k][i]); }

假设int类型变量占用4个字节,定义数组 int x[10] = {0,2,4}; 则x在内存中占据几个字节?

若有: int a[][3] = {{0},{1},{2}}; 则 a[1][2] 的值是?

多项式加法

鞍点

对于:int a[] = {5, 15, 34, 54, 14, 2, 52, 72}; int *p = &a[5]; 则: p[-2]的值是?

如果:int a[] = ; int *p = a; 则以下哪些表达式的结果为真?

以下变量定义: int* p,q; 中,p和q都是指针。

对于:int a[] = {5, 15, 34, 54, 14, 2, 52, 72}; int *p = &a[1]; 则: p[2]的值是?

单词长度

gps数据处理

化学品灼伤眼睛以后,应该立刻采取的措施是?

皮肤被低温冻伤应该?

hcn无色,气味是?

以下哪一项不是发生爆炸的基本因素?

苯乙烯和乙酸乙烯酯应该放在?

化学药品库中的药品一般如何分类

为了安全,必须放在煤油中的金属是?

下列不属于易燃液体的是

下列说法错误的是?

下列何者容易发生爆炸?

下列什么物质应避免与水接触而发生危险?

下列哪种物质具有强酸性和强腐蚀性?

当发生电器火灾时,应该采取的首要措施是什么?

有人触电时,使触电人员脱离电源的错误方法是?

被火困在室内,应该如何逃生?

进行危险性试验操作时

以下药品中,可以和水直接接触的是?

以下是安全进行实验工作的基本要素,哪一项不对

汽油,苯,乙醇属于?

以下不属于燃烧必须的条件的是?

药品中毒的途径有哪些?

不需要放在密闭的干燥器内的是?

水银具有高毒性,常温下挥况如何

领取及存放化学药品时,以下说法错误的是

氯气急性中毒可引起严重并发症,如气胸、纵隔气肿等,不会引起什么症状?

不慎发生意外,下列哪个操作是正确的?

需要你将硫酸、氢氟酸、盐酸和氢氧化钠各一瓶从化学品柜搬到通风橱内,正确的方法是:

盐酸、甲醛溶液、乙醚等易挥发试剂应如何合理存放?

以下哪个药品(试剂)在使用时不用注意干燥防潮?

用剩的活泼金属残渣的正确处理方法是:

欲除去氯气时,以下哪一种物质作为吸收剂最为有效?

为了防止在开启或关闭玻璃容器时发生危险,下列哪一种瓶塞不适宜作为盛放具有爆炸危险性物质的玻璃容器的瓶塞?

当不慎把少量浓硫酸滴在皮肤上(在皮肤上没形成挂液)时,正确的处理方法是:

下面哪些物质彼此混合时,不容易引起火灾?

以下物质中,哪些应该在通风橱内操作?

以下哪个不可以组成混合展开剂

下面哪种方法是最便利最省时的监控反应进程的方法。

使用硅胶色谱板时,展开能力最强的溶剂是:

薄层色谱英文缩写是tlc。

不同物质的比移值不可能相等。

薄层色谱点样时,都需要重复点2-3次。

固定相含水量越高活性越好。

薄层色谱板使用前应用烘箱干燥活化。

薄层色谱的应用之一是用来寻找柱色谱的条件。

增加展开剂的极性能提高比移值。

增加展开剂的用量能提高比移值。

请完成实验报告撰写,上传实验报告照片、主要仪器装置图照片和最终产品图照片。

蒸馏沸点高于 的液体应该使用空气冷凝管。

蒸馏时,安装温度计的正确位置是:

蒸馏结束的标志是

五氧化二磷干燥的原理是:

下列哪种情况不需要干燥?

蒸馏乙酸正丁酯时使用的冷凝管是:

对于未知液体的干燥,应选用下列哪种干燥剂:

为了保证蒸馏效果,应该加满蒸馏瓶。

为了提高产率,在蒸干后应继续加热。

蒸馏加热开始后,发现未加入沸石,应立即停止加热打开烧瓶加入沸石。

对于热稳定性差的物质可以用减压蒸馏提纯。

蒸馏结束后,应立即关闭电源,移走加热热源,冷却后拆卸仪器。

蒸馏是根据各组份熔点不同分离混合物的一种方法。

前馏份应该倒回蒸馏瓶继续蒸馏。

氯化钙可以用来干燥醇类化合物。

金属钠不能用来干燥酸性化合物。

干燥剂加入量是越多越好。

液体干燥好的标准是瓶底有大量的干燥剂。

蒸馏时结束的标志是直到液体蒸干。

请完成实验报告撰写,上传实验报告照片、主要仪器装置图照片和最终产品图照片。

重结晶适用于纯化杂质含量在 以下的固态有机物。

加入活性炭脱色时,一般用量是

重结晶时,活性炭所起的作用是:

关于结晶过程以下说确的是

重结晶操作对于溶解度极小的杂质哪一步可以除去?

重结晶乙酰苯胺使用哪种溶剂?

抽滤时为了保证过滤效果可以多加三到五层滤纸。

脱色处理时,为保证效果应加入等量活性炭。

脱色处理时,为保证脱色效果,加入活性炭后,应回流3-5个小时。

热过滤时,布氏漏斗和抽滤瓶都应该预热。

重结晶时应先确保固体完全溶解后再开始加热。

抽滤时如果滤纸破裂,就应重新抽滤。

重结晶是利用了混合物中各组分在溶剂中溶解度的差异进行分离的方法

重结晶选择溶剂的原则之一是杂质溶解度特别小或特别大。

请完成实验报告撰写,上传实验报告照片、主要仪器装置图照片和最终产品图照片。

柱色谱中,吸附剂比表面积越大,则分离效果

在用吸附柱色谱分离化合物时,洗脱溶剂的极性越大,洗脱速度越

用柱色谱分离甲基橙和亚甲基蓝,使用的固定相是:

用柱色谱分离甲基橙和亚甲基蓝,使用的流动相是:

柱色谱中石英砂的作用是:

化合物与固定相的吸附作用力越强,则洗脱时向下移动的速度越慢。

柱色谱分离化合物时,洗脱剂不能改变。

柱色谱分离化合物时,如果采用梯度法,先用极性较小的溶剂洗脱,再用极性较大的溶剂洗脱。

请完成实验报告撰写,上传实验报告照片、主要仪器装置图照片和最终产品图照片。

将环己醇氧化为己二酸,下列哪种是实验室常用的氢化剂?

本次己二酸制备实验使用的反应瓶是

己二酸制备实验怎样判断反应是否完全?

用高锰酸钾氧化环己醇制备己二酸实验中,高锰酸钾是过量的。

己二酸制备实验中,环己醇是采用滴加的方式加料。

己二酸制备实验中,当环己醇滴加完毕,可以停止搅拌。

本实验可以通过升高反应温度提高产率。

反应结束抽滤粗产品时,可以用少量冰水洗涤二氧化锰固体。

粗产品酸化处理,浓缩后冷却抽滤,可以用少量冰水洗涤产品。

请完成实验报告撰写,上传实验报告照片、主要仪器装置图照片和最终产品图照片。

制备乙酸正丁酯,得到的粗产品用哪种干燥剂进行干燥?

乙酸正丁酯制备使用哪种催化剂?

乙酸正丁酯与水相在分液漏斗中进行分离时,水相在下层。

振摇分液漏斗时,应不断放气。

振摇分液漏斗放气时不能对着人或者火源的方向。

乙酸正丁酯合成过程中,不加催化剂不影响反应速度。

乙酸正丁酯合成过程中,使用分水器的目的是减少反应瓶液体的量。

乙酸正丁酯合成过程中,使用分水器的目的是使平衡向右进行。

乙酸正丁酯合成过程中,分水器中水量始终不变。

乙酸正丁酯合成过程中,分水器中液体出现两层,其中上层含有反应物成分。

请完成实验报告撰写,上传实验报告照片、主要仪器装置图照片和最终产品图照片。

从茶叶中提取的溶剂是:

下列对索氏提取器的提取原理,说法不正确的是?

晶体是:

索式提取器是一个固液萃取装置。

提取液颜色变淡,就可以停止提取了。

是一种。

粗是用升华的方法提纯的。

本实验生石灰的作用是吸水和中和。

回收乙醇时要留少量溶剂,以便将粗产物倒出。

索氏提取器由单口烧瓶、提取筒和球形冷凝管三个部件组成。

当提取筒内液面高于虹吸管最高点时,会发生虹吸。

为提高升华速度,温度越高越好。

请完成实验报告撰写,上传实验报告照片、主要仪器装置图照片和最终产品图照片。

乙酰水杨酸是哪种药物?

乙酰水杨酸制备的催化试剂是?

乙酰水杨酸制备的酰化试剂是?

乙酰水杨酸制备实验反应体系如果含有水?

为检测乙酰水杨酸产品中是否含有水杨酸,可采用

本次实验反应瓶必须干燥,不能有水滴。

反应装置中加干燥管的目的是防止空气中的水份进入反应体系。

乙酰水杨酸制备中,催化剂可以用稀硫酸代替浓硫酸。

副产物高聚物是在酸化一步除去的。

本实验需要进行3次抽滤。

酸化过程中,必须缓慢加入盐酸。

请完成实验报告撰写,上传实验报告照片、主要仪器装置图照片和最终产品图照片。

人类已消灭的烈性是

低剂量即能活化大量t、b细胞,诱导强烈免疫应答的抗原称为

半抗原是

存在于不同种属之间的共同抗原称为

抗abo血型的天然抗体的类别是

属于ig超家族的分子具有

关于细胞因子的叙述,下述哪些是不正确的

能直接杀伤肿瘤细胞的细胞因子是

白细胞分化抗原大多数是:

下列哪项不是hla复合体基因编码的产物?

经典hla-i类分子不表达在哪些细胞表面

hla分子多态性部位是

下列哪种分子不是补体激活的mbl途径所需要的

调理作用主要由哪种细胞介导

中枢免疫器官包括

决定抗原特异性的物质基础是

下列哪些分子是t细胞表达的

成熟的t细胞具备哪些特征

成熟型b细胞表达的bcr是

what is defamiliarization?

what is a gap in a text?

how to appreciate a text?

what is the difference between bill's "oh" and mary's "oh"?

why does the writer use the title "early autumn"?

bill is expecting mary for many years. he changed a little.

mary's love toward bill is intensified into the image her youngest boy, whose name is bill too.

what is a gap in a text?

why does the writer use the title "early autumn"?

mary's love toward bill is intensified into the image her youngest boy, whose name is bill too.

how to appreciate a text? we should fill in the ___, and try to take part in the plots.

there are two ways of foregrounding, which are defamiliarization and connotations.

usually the writer is the narrator and the events in literature are the real events happening in history.

aesthetic object means that literature is to be enjoyed and it is only a kind of experience.

all of the texts should have the feature of self-reflexiveness.

texts have some relationships with the former texts more or less, which is intertextuality.

what is the symbolic meaning of little shoulder-high window?

what is the meaning of the last sentence "in this manner, the issue was decided."

which one does the title not indicate?

what is the symbolic meaning of dirty water and darkness?

what is the meaning of the last sentence "in this manner, the issue was decided."

what is the symbolic meaning of dirty water and darkness?

aesthetic object means that literature is to be enjoyed and it is only a kind of experience.

there are three ways of defamiliarizaton, which are ___ , filling in the gaps and unusual plots.

american social development (including literature) was strongly influenced by american puritani.

romantici is rebellion against neoclassici, the rise of anti-traditionali.

reali is rebellion against romantici and the disillusionment with the idea heroi.

american naturali is a pessimistic off-shoot of american reali.

moderni is not full of private emotion and a sense of loss.

american literature is one of the youngest literatures, just over 200 years old.

american literature has 6 stages: colonial period, enlightenment, romantic age, reali, moderni, and post 1945.

reali is author-centered, full of imagination, emotion, and introspection.

which expression is correct?

which expression is not correct?

american literature has 6 stages: colonial period, ___, romantic age, reali, moderni, and post 1945.

edgar allan poe is usually acknowledged as the originator of ______.

from the following, choose the stories not written by edgar allan poe.

edgar allan poe wrote poems which are marvels of beauty and craftanship, such as______.

please choose the names of the main characters in the story the cask of amontillado

edgar allan poe is generally thought of as the true beginner of the short stories because he was the first writer who formulated a poetics of the short stories.

what is metaphor?

which one of the following examples does the author use the technique of symboli?

what are the characteristics of symboli?

symboli was a late 20th century art movement of french and belgian origin in poetry and other arts.

what figure of speech does the author use in the names of two main characters?

how many times does the bell jingle in total?

the word “cask” in the title only means “barrel” without symbolic meanings.

edgar allan poe is usually acknowledged as the originator of ______.

what are the characteristics of symboli?

emerson distinguished his contemporaries as party of hope and party of memory. party of memory is anti-transcendentali.

everyone possesses some evil secrets in young goodman brown.

young goodman brown is translated as 《年轻好小伙布朗》.

hawthorne’s unique gift was for the creation of strongly symbolic stories which touch the deepest roots of man’s moral nature.

it is necessary that libido and superego protect inidual and society.

which one is not correct?

please choose the correct expressions.

emerson distinguished his contemporaries as ______ and party of memory. party of memory is anti-transcendentali.

kate chopin was a woman whose feminist viewpoints were far ahead of her time, which of course garnered her more than her share of critici.

gender identity only refers to the self-awareness of one's biological characteristics

femininity is aggressive, competitive, art, strong-hearted, tough, rational, social, and independent.

simone de beauvoir says in the second sex: “one is not born, but rather becomes a woman."

feminist critici examines the ways in which literature (and other cultural productions) reinforce or undermine the economical, political, social, and psychological oppression of women.

feminist critici examines the ways in which literature (and other cultural productions) reinforce or undermine the economical, political, social, and psychological oppression of women.

gender is an effect of biology, and not a social construction.

there are two genders: masculinity and femininity.

simone de beauvoir says in the second sex: “one is not born, but rather becomes a woman.

the title of the novel first published in 1894 is the dream of an hour, which shows the protagnist’s an hour’s dream.

the whole house represents a patriarchal family, and her huand loves her all the time.

which expression is wrong?

choose the correct expressions.

in the story of an hour, the whole house represents a patriarchal family, and her huand loves her all the time.

there are two genders: masculinity and_____.

the real name of mark twain is __________.

mark twain’s first successful literary work is________.

which of the following are the characters of the short story the celebrated jumping frog of calaveras county?

mark twain was born in florida, mississipi on november 30, 1835, and grew up in the river town of hannibal.

mark twain, one of the greatest 19th century american writers, is well known for his __________.

mark twain shaped the world’s view of america and made a combination of serious literature and _____________.

which one is not the background of the emergence of local colori?

in the book crumbling idols, mark twain defines local colori as having “such quality of texture and background that it could not have been written in any other place or by anyone else than a native.”

mark twain wrote most of his literary works with a ______ language.

the main characters' setting of this story has no relationship with local characteristics.

mark twain’s first successful literary work is________

in the book crumbling idols, mark twain defines local colori as having “such quality of texture and background that it could not have been written in any other place or by anyone else than a native.”

mark twain, one of the greatest 19th century american writers, is well known for his __________.

the second person point of view is often applied in autobiographyical novels.

which of the following condition does not belong to the external conflict?

which expression is not correct?

which of the following condition belongs to the external conflict?

the ____ point of view is often applied in autobiographyical novels.

which one of the following novels is not written by ernest hemingway?

which of the following figures does not belong to “the lost generation”?

hemingway’s code hero refers to a man with _____.

the novel a farewell to arms portrays a farewell both to war and love.

the dignity of movement of iceberg is due to only one-eighth of it being above water is put forward by fitzgerald.

which character is not in the story a clean, well-lighted place?

what are the characteristics of the old waiter?

existential nihili thinks that all the things around us is nihilistic except what we can perceive with our sensual organs, that is what we experienced is the real and exists.

the story a clean,well-lighted place is firstly published in 1953. it is one of the most extraordinary short stories written in hemingway’s late times.

what are the characteristics of young waiter?

ernest hemingway fuses naturali and symboli in a clean, well-lighted place. one of the motifs in this story is nothingness/nihili.

hemingway’s code hero refers to a man with _____.

what are the characteristics of young waiter?

existential nihili thinks that all the things around us is nihilistic except what we can perceive with our sensual organs, that is what we experienced is the real and exists.

ernest hemingway fuses naturali and symboli in a clean, well-lighted place. one of the motifs in this story is ___________ .

william faulkner is a nobel prize winning novelist in northern part of america.

faulkner experiments in the use of stream-of-consciousness technique in the dislocation of narrative time.

in narratology, there are two types of time: time of discourse and time of story.

in a rose for emily, the writer uses epsis and prolepsis to create a circular time order.

the use of linear time order in a rose for emily is to achieve the theme, transcending time.

which expression is correct?

choose the correct expressions.

the use of linear time order in a rose for emily is to achieve the theme, transcending time.

in narratology, there are two types of time: time of discourse and ________.

there are four types of duration——summary, pause, scene, ellipsis.

summary means that discourse time is longer than story time.

pause means that discourse time equals to story time.

william faulkner uses four kinds of duration in his short story, a rose for emily.

ellipsis can create somewhat suspense and arouse interest of readers.

"alive, miss emily had been a tradition, a duty, and a care; a sort of hereditary obligation upon the town......" is the external focalization.

which expression is correct?

choose the correct expressions.

there are four types of duration——summary, pause, ____, ellipsis.

emily did not have the ability to control homer’s thought, but she could deprive of his life in order to defeat him forever.

the name of the slave tobe implies existence. as in shakespeare’s drama hamlet, the protagnist said, “to be or not to be , this is a question.” it means: “to live or not to live, this is a question.”

which expression is not correct?

which expressions are correct?

the name of the slave tobe implies existence. as in shakespeare’s drama_____, the protagnist said, “to be or not to be , this is a question.” it means: “to live or not to live, this is a question.”

her novel ship of fools (《愚人船》)was published in 1962.

she won the national book award and the pulitzer prize in 1966.

she was indifferent with the major events of the world at her time and expressed her own judgments on them through her literary works.

he term “stream of consciousness” originated from the field of psychology.

rising in the late 19th century and booming in the 20s and 30s of the 20th century, stream of consciousness may be one of the most frequently used narrative techniques that have been adopted by many writers.

for porter, stream of consciousness is an important instrument for describing the main characters and their inner world.

stream of consciousness is now a dispensable term in modern literary creation and critici.

there are conflicts between different social strata, men and men and the ideal and reality.

which one about anne porter is not correct?

‍there are conflicts between_____ in theft.

for porter, _____ is an important instrument for describing the main characters and their inner world. in many of her works she uses this technique.

many writers like to set their hometown as the background of their stories. john steinbeck was born in salinas, california.

of mice and men is his masterpiece for which steinbeck received the nobel prize for it in 1962.

many writers like to set their hometown as the background of their stories. where was john steinbeck born?

femini in the story includes the following:

choose the work not written by o·henry.

o·henry was one of the born _______. and he wrote so naturally and tactfully without much difficulty.

o·henry iswell-known for his _______which occurs near or at the conclusion of a story and makes his readers to reevaluate the narrative or characters.

theme is an important element in a novel. it is one of the safest comments to make about a novel. any novel must have its own unique theme.

o·henry was one of the born _______. and he wrote so naturally and tactfully without much difficulty.

choose the work written by o·henry.

theme is an important element in a novel. it is one of the safest comments to make about a novel. any novel must have its own unique theme.

下列物体中那个是绝对黑体?

黑色的物体就是黑体

夜间地面降温主要是由于地面的 。

黑体辐射中的紫外灾难表明 。

普朗克量子假说是为解释

普朗克给出的黑体辐射公式是可以从经典的理论推导出来的。

光电效应实验中,用频率一定的单色光照射某金属,则饱和光电流与照射光强成正比。

在光电效应实验中无论照射光的频率如何,只要其光强足够强,一定会有光电子产生。

光电效应实验中,遏止电压值与照射光的光强 (无关/有关)。

对波长为l 的光子,有

光电效应实验中,已知照射光的频率大于红限频率,若保持照射光的强度不变而增大其频率,则饱和光电流将 (增大/不变/减小)。

按玻尔的原子理论, 当原子处于某定态时, 其能量 稳定不变 的.(是/不是)

光可以看成光量子的有力证据之一是:

康普顿散射实验中,对同一散射物,当散射角减小时,其对应的康普顿散射光的波长将 (增大/减小/不变)。

若一个电子与一个质子的动量大小相同,则电子的德布罗意波长 质子的德布罗意波长(大于/等于/小于)。

扫描隧道显微镜原理是利用了电子的 。(粒子性/波动性)

在电子双缝衍射实验中, 两个缝同时打开时, 电子具有波动性;如果挡住一个缝,而只开一个缝时,电子就不具有波动性.

物质波描述了粒子在空间各处被发现的概率.

不确定性关系仅适用于电子和光子,不适用于其他粒子。

由微观粒子的波动性可知,当粒子的位置坐标不确定量越小时,其同方向的动量 不确定量就越 。(大/小)

先后两次测得炼钢炉测温孔(近似为黑体)的温度比为t1/t2为2:1,则

关于光电效应实验,下列判断正确的是

光电效应实验中,已知照射光的频率大于红限频率,若保持照射光的强度不变而增大其频率,则截止电压

光可以看成光量子的有力证据之一是

不辐射可见光的物体就是黑体。

普朗克引进了能量子假设,即物体只能以能量子为单位发射或吸收电磁波。此假定与经典物理是相容的。

不确定性关系不仅适用于电子和光子,也适用于其他粒子

单色光照射在某种金属上做光电效应实验,用紫光可以产生光电流,用相同强度的红光一定也能产生光电流.

微观粒子的不确定关系,来源于其自身的波粒二象性。

任何波长的可见光照射到任何金属表面都能产生光电效应.

波长为l 的光子, 其 的大小为h/l

波长为l 的光子, 其 为hc/l.

康普顿散射实验中,对同一散射物,当散射角增大时,其对应的康普顿散射光的波长将 (增大/减小/不变)。

若一个电子与一个质子的德布罗意波长相同, 则两者的动量大小 相同.(一定/可能)

在光电效应实验中,电子与光子的相互作用过程 动量守恒定律(不满足/满足)

描述微观粒子运动的波函数需要满足的标准条件为:单值,有限,连续。

一维无限深势阱中的物质波会以 (驻/行)波的形式存在。

扫描隧道显微镜的原理可以用量子隧穿效应解释。

若一维线性谐振子处于基态,则其处于经典禁止区的概率是____________。

在氢原子光谱赖曼系中,最长波长的谱线是从主量子数为 的初能级向主量子数 为 的末态能级跃迁得到。

具有下列哪一能量的光子,能被处在 n=2的能级的氢原子吸收?

原子自发辐射和受激辐射发光的特点分别是:

光与原子体系相互作用时,总是同时存在自发辐射、受激吸收和受激辐射三种过程,其中产生激光的过程是 。

激光器系统一般由激励能源、工作物质和 组成。

普通光源的发光机制是( )占优势。激光器发出的光是( )占优势。(自发辐射/受激辐射)

与绝缘体比较,半导体能带结构的特点是

量子物理研究表明,孤立原子中的一系列分立能级,在晶体中对应着电子相应的 。

如果(1)硅用铝(3价)、(2)硅用磷(5价)参杂;而(3)锗用铟(3价)、(4)锗用锑(5价)掺杂;则分别获得半导体属于下述类型正确的是

p型半导体的导电载流子只有空穴。

n型半导体的导电载流子主要是 。(电子/空穴)

一维无限深势阱中,在第三激发态发现粒子概率最大的地方有 处。

在宽度为a的一维无限深势阱中,势阱宽度a与波长的关系是

p型半导体的导电载流子为电子和空穴,并且以空穴导电为主。

受激辐射所产生的光子具有与外来光子完全相同的特性。即它们的频率、相位、振动方向、传播方向均相同。

粒子数反转是指:激光器的工作物质处于高能级中的粒子数超过处于低能级的粒子数。

物质波不同于机械波和电磁波,它不代表一个实在物理量的波动。

一维无限深势阱中的物质波会以行波的形式存在。

一维无限深势阱中,粒子的基态能量为0.

n型半导体的导电载流子主要是 。(电子/空穴)

在本征半导体中,本征激发到空带中的电子数目 (大于/等于/小于)余下的满带中的空穴数目。

如果一个能带中所有的能态都被电子填满,这个能带成为 。

要实现粒子数反转,系统要有激励能源使粒子激发,并且工作物质还要有合适的 能级。

若氢原子处于主量子数n=4的状态,则角量子数的可能取值有 个。

将氢原子的1s电子分别激发到3s和3p轨道,所需能量的关系是

线性谐振子的能量本征方程是: (其中是粒子的质量)

在量子物理中,描述微观粒子运动状态的是:

对于确定的角量子数,磁量子数m的可能取值有 个。

下列各组量子数中,哪一组可以描述原子中电子的状态?

对于主量子数n=4的电子层,有 个壳层,可以容纳的电子数是 .

一维无限深势阱中,处于第一激发态的粒子,有 个概率峰值。

已知电子处于3d态,则其轨道角动量的大小l=

先后两次测得炼钢炉测温孔(近似为黑体)的温度比为t1/t2为3:1,则

地球表面温度约为300k, 估算地面的热辐射波段大约为

一个氢原子处于第二激发态, 那么此氢原子

若一维线性谐振子处于基态,则其能量为

杂质半导体中,电子的数目与空穴的数目相等。

在本征半导体中,本征激发到空带中的电子数目大于余下的满带中的空穴数目。

自发辐射所产生的光子具有与外来光子完全相同的特性。即它们的频率、相位、振动方向、传播方向均相同。

产生激光的四能级系统中,于和能级之间发生粒子数反转。

基态原子中电子的排列,应遵循泡利不相容原理和能量最小原理。

当光与物质系统发生相互作用时,自发辐射和受激辐射都可以使系统的光子数增加。

光电效应实验中,用频率一定的单色光照射某金属,则饱和光电流与照射光强成正比。

不确定关系不仅适用于电子和光子,也适用于其他粒子

单色光照射在某种金属上做光电效应实验,用紫光可以产生光电流,用相同强度的黄光一定也能产生光电流.

不确定关系存在的根本原因,是微观粒子具有波粒二象性.

任何波长的可见光照射到任何金属表面都能产生光电效应.

不确定关系的存在是由于测量引起的,或者是由于测量仪器的精度不够引起的,随着测量仪器精度的提高,原来测不准的关系会不断得到改善。

氢原子en 能级上出现了能量2度简并,则n = 。

p型半导体的导电载流子主要是 。(电子/空穴)

氢原子基态的能量 第一激发态的能量。(大于/小于/等于)

n=4的原子轨道上最多可容纳 个电子。

价电子所在的能级分裂形成的能带称为 。

已知电子处于4f态,则其主量子数n=

处于第3激发态的氢原子跃迁回低能态时,可以发出的可见光谱线有 条?

普朗克引进了能量子假设,即物体只能以能量子为单位 或吸收电磁波。

光电效应实验中,遏止电压值与照射光的光强 (有关/无关)。

康普顿散射实验中,对同一散射角,当散射物不同时,其对应的康普顿散射光的波长将 (改变/不变)。

由微观粒子的波动性可知,当粒子的位置坐标不确定量越小时,其同方向的动量的不确定量就越 。(大/小)

the suffix “-plasty” in medical terms means______?

the prefix“endo-” means_____.

which of the following suffix means abnormal condition?

what is combining form in greek for stomach?

the combing form of rectum in greek is_____.

the etymology of medical terms refers to the origins of medical terms.

most of the medical terms originated from latin.

in many cases of modern medicine, latin and greek words are used to create new terms.

tooth’s roots in greek and latin are “odont(o)”, “dent(o)”.

stomach's root form in latin is “rect(o)”.

how can we memorize the medical terms effectively?

why does the author say “the human body is a remarkably complex and efficient machine”?____

what can we know about the bones according to the passage?_____

which of the following is true about the heart?_____

what is in vitro fertilization?

what is uterus?

what is abdominal wall?

what is fallopian tube?

what is ovary

what is hypertension

what is surrogate?

what is infertility?

what is seasarian sectoin?

what may be more appropriate for men where the cancer is not causing much in the way of symptoms, is slow growing, especially in older men ?

what’s the chinese meaning of “fallopian tube”?

different types of anaesthesia cannot be used in combination at any time.

when anesthesia awareness occasion during a surgery, the patient may feel pain or may not feel it.

prostate cancer is often slowly growing. there may be no symptoms at first, even for years.

human reproduction is any form of sexual reproduction, resulting in the conception of a child, typically involving sexual intercourse between a man and a woman.

the english for 子宫 is _______.

what does the digestive system refer to?

the tip of the heart at the lower edge is called the _______.

which is not cardiovascular disease?

what is the meaning of medical term “eupnea”?

w.x. is a 67 year old woman. which of the following does not indicate that she suffers from diabetes mellitus?

the hindbrain consists of the following parts,which are

what are the functions of the thyroid gland?

cortex makes the hormones that control our growth, metaboli, water and mineral balance, sexual maturity, and how we respond to stress.

just like a conductor who controls and directs the different musicians in an orchestra, the endocrine system controls and directs other systems in our body, telling them what should be done at what time.

larynx is not only the organ of respiratory system but also that of digestive system.

both pulmon/o and pneum/o mean lung or of lung.

diabetes mellitus(dm), is a group of metabolic diseases which is closely related to the pancreas and the hormone it secretes insulin .

the meaning of the suffix"-ostomy” is creating an opening.

what are major functions of the cardiovascular system?

how to manage diabetes mellitus effectively?

the digestive system refers to ____.

the ____ controls all other systems and bodily movements.

what is the function of nervous system?

general anesthesia can be ided into intravenous anesthesia, _____,and combined intravenous and inhalation anesthesia

which is/are not the component of the cardiovascular system?

what can keep patients unconsciousness during general anesthesia?

what can keep the body of patients paralyzed during general anesthesia?

the wall of the heart is composed of ________ layers.

which type of anesthesia is mainly for many surgeries of the abdomen, pelvis, and lower extremities.

____is a condition of the nervous system that can lead people to have seizures.

____is a disorder that affects a person's ability to eat,sleep,feel pleasure,and function in everyday.

the patient may have normal sensation and may be wide awake, but the ____ given to paralyze the body during surgery may prevent patients from alerting anyone to their problem.

what is the function of positive eye contact?

the structural classification of neurons are based on the number of

the function of sympathetic nervous system is for

by the age of 70, what percentage of men have an enlarged prostate.

the part which is responsible for balance, movement, and coordination is

the type of anaesthesia used for a surgery will depend on ______.

what is the treatment of illness based primarily on ?

the patient who is suffering anesthesia awareness is _____ during the surgery.

what is empathy?

"if the hospital wants to obtain consent to remove the the deceased person’s organ , who will be the first to be approached?"

how much time does a doctor usually spend on eye contact when he is speaking with the patient?

which of the following contents does not appear on the history of present illness part?

which of the following means nose inflammation?

____ is the location of the vocal cords.

which of the following means slow breathing?

____ covers the larynx and trachea during swallowing, which provides protection against food and liquid being inhaled into the lungs.

which of the following suffix means record or picture?

which of the following means inflammation of the kidney?

which of the following means the layer above the dermis?

which of the following means rupture of the liver?

which of the following suffix means instrument for viewing the stomach?

each bronchiole terminates in a all group of air sacs, called ___.

we consume a variety of healthy foods to derive the nutrition our body needs, which may not include

which of the following sentences is true?

which of the following is not true concerning diabetes

what are the bones composed of?

which systems belong to human anatomy?

what is the pulse rate?

what are the involuntary muscles?

what are the nervous system?

which parts belong to the central nervous system?

which organs are included in the urinary system?

which parts belong to the brain?

which parts belong to the digestive system?

which parts do not belong to the respiratory system?

the two bottom chambers of the heart are ________and ________.

the two top chambers of the heart are ________.

the ________and ________valves separate the atria from the ventricles.

plaque is made up of ________, ________, ________, and other substances found in the blood.

what does equal access criteria include?

the autonomic nervous system has also its own ision, which are

restrictions in blood flow to the brain may be caused by ________, ________, ________, or ________.

if you thought something was rubbish when writing literature review, what kind of words should be used?

the nervous system is simply ided into

what are the main types of intraspinal anesthesia?

what are the ways of diagnostics in tcm?

which three important components are included during general anesthesia?

the forebrain is the largest and most complex part of the brain.it consists of the following parts

what are the symptoms of prostate cancer?

what kind of patients are of high risk of complications of general anesthesia?

our brain has left and right halves,and scientists think that some people are more

in which situation the patient is more likely to experience anesthesia awareness?

when academic writers are not very sure about the result of some studies, what words do they tend to use?

what can anesthesia awareness be refered to as?

family history refers to families and the tracing of their lineages(血统) and history. what do families refer to?

past history includes information about:

the major glands that make up the human endocrine system include:

the pituitary gland is actually two endocrine glands. they are:

what hormones does the anterior pituitary gland secretes?

laboratory data is also important for diagnosis and treatment. it include:

managing diabetes is to keep the following levels under control:

the basic managing tools for type 2 diabetes include:

which of the following descriptions about the parathyroid gland are true?

what are the key elements of the statement of purpose in the introdution part?

which of the followings are key elements of the discussion part in academic writing?

which of the following terms involves the problems of breathing?

which of the following suffixes means a disease?

the human body is remarkably complex and efficient system.

the heart is roughly the size of your fist.

bones are as heavy as steel.

the vertebral column is also called the spinal column.

at the top of the vertebral column is sthe pelvis.

the huamn heart consists of four chambers, two atria and two ventricles.

skeletal muscles are called involuntarty.

positive eye contact in a doctor's office should establish an immediate open line of communication

coronary artery disease is the most common type of heart disease.

cerebrovascular disease can lead to chest pain or a heart attack.

an graft is a surgical operation where a failing or damaged organ in the human body is removed and replaced with a new one.

precision medicine will allow doctors and researchers to predict more accurately which treatment and prevention strategies for a particular disease.

epilepsy, is a condition of the nervous system that can lead people to have seizures.

there are several types of dementia. the most common type of dementia is alzheimer's disease.

epidural anaesthesia is more appropriate than general anaesthesia for a patient with heart disease during his surgery of stomach.

injuries to the brain and chronic drug or alcohol abuse also can trigger depression

only with ample substances can the human body function in a healthy way

both intraspinal anaesthesia and general anaesthesia can be used for c-section.

although there is no cure for dementia, symptomatic treatment of symptoms such as anxiety, depression, paranoia, and sleep disturbance is available.

anaesthesia awareness may usually occur in one' dental extraction.

although age is the strongest known risk factor for dementia, it is a normal part of ageing.

a benign tumor is cancerous and more likely to grow rapidly and spread.

regional anaesthesia is used to block the sensation in a specific part of your body without inducing unconsciousness.

when introducing someone’s opinion, you should use “says”, instead of“argues”, “claims” or “states”.

most patients who experience anaesthesia awareness have fleeting memories of conversation among the staff or the sound of machines in the or.

tissue and organs are connected through a network of channels and blood vessels inside human body.

the man who developed the symptom of poor emptying must have prostate cancer.

if a doctor suspects that you may have prostate cancer, he or she will ask you to have a psa test.

when fasting blood glucose level is higher than 126mg/dl on two occasions, diabetes mellitus is diagnosed.

when random (non-fasting)blood glucose level is higher than 180mg/dl, and accompanied with the general symptoms, diabetes mellitus is suspected.

at least 65 percent of those with diabetes die from heart diseases or stroke.

the thyroid gland lies in the neck just below the larynx; at the sides of the trachea below the thyroid cartilage.

a brain region commonly associated with ocd is the cortex.

malnutrition is a condition that results from a poor diet, in which nutrients are not enough such that the diet causes health problems.

in some developing countries, undernutrition in the form of obesity is beginning to be present.

calorie restriction may not result in negative health effects.

breastfeeding can reduce rates of malnutrition and death in children.

before cloning dolly successfully, the researchers had succeeded in cloning mice once.

the creation of dolly has raised public concerns about ethical limitations.

we have already succeeded in using stem cells to repair human tissues.

the prefix"exo-"means outside .

the suffix"-oma"means tumor .

the suffix"-pathy"means disease .

the suffix"-plasty"means surgical repair .

the prefix"para-"means before .
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