if the impulse response of the linear time-invariant system is h[n], then the sufficient and necessary condition of the system causality is ( ).
the dtft of the conjugate symmetric component of the sequence is equal to the real part of the dtft of the sequence.
the system represented by y[n] = cos (x[n]) is a linear system.
订货点法是一种使库存量满足()的一种库存补充方法。
belfast, the capital of northern ireland, is a large city with millions of people.
【判断题】过程控制执行器功能是控制被控过程的流入和流出物料的流量，这种说法是对或错？
视频格式中的视频参数信息包括()。
if you want to digitize the speech signal for subsequent processing, the speech signal must be passed through:
()是开展影像创作实践的基础。
【判断题】利用相关法，可以剔除与信号不同频的噪声，这种说法是对或错？
【填空题】动态特性法以 依据
音量指示器是声音音高的指示器，声音音高的大小单位是赫兹hz。()
the correct description of the sequence are
哪种拍摄方法三脚架可以固定在原位?()
primarily using non-verbal methods to relay meaningful information in conversations, such as facial expressions, is one of the characteristics of high-context cultures.
which response reflects self-enhancement? --i love your sweater. you look so art in it. --______________________________.
语言暴力是低成本的，甚至是无成本的，它所产生的影响也是微乎其微的。
communication is a one-way process. all participants in a communication process work together to create and sustain the meanings.
the experiment "brown eyes blue eyes" shows us how stereotyping is harmful and ridiculous.
《国防法》第七章第四十二条对学校国防教育做出的规定，包括____。
which is not quantitative traits?
in an intercultural communication we should make our verbal messages consistent with our nonverbal messages.
后现代主义的设计观是一种开放的、兼容并蓄的设计观，比如包括以下：
it is difficult for foreigners to understand chinese traditional medical treatment, because they don't___________________.
the seven universal emotions, sadness, happiness, disgust, anger, contempt, surprise and fear, are based primarily on facial expressions.
according to eastern cultures, respecting the relationship through communication is more important than exchanging information.
people in high-context cultures can correctly decode the meaning of silence because
the characteristics of communication are: communication is contextual, __________, transactional, __________ and irreversible.