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【判断题】
在深度负反馈的条件下,无微不至增益Af=1/F,它与反馈系数有关,而与放大电路开环增益A无关,因此可以省去基本放大电路,仅留下反馈网络,就可获得稳定的闭环增益。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】以下将素材放置到时间线窗口中描述正确的是哪项
A.
按住鼠标左键将其拖曳到时间线窗口中
B.
双击项目窗口中的素材文件
C.
使用快捷键Ctrl+V
D.
在时间线窗口中单击鼠标右键
【单选题】What was NOT the status of the young Americans in 1950s?
A.
They were aggressive and ambitious.
B.
They were feeling hopeless and living a meaningless life.
C.
They were unsatisfied with their life.
D.
They were dishonest.
【单选题】The following is an abstract, consisting of 5 sentences. Which element does Sentence ④describe?Abstract: ①Research on exposure to television and movie violence suggests that playing violent video game...
A.
the key results or findings
B.
background information
C.
the methods
D.
the main conclusion
【简答题】Boys' schools are the perfect place to teach
young men to express their emotions and are more likely to get involved in
activities such as art, dance and music, according to research released today. F...
【简答题】To produce the upheaval in the United States that changed and modernized higher education from the mid-1860s to the mid-1880s, several causes interacted. The emergence of a half-dozen leaders in educa...
【简答题】Boys’ schools are the perfect place to teach young men to express their emotions and are more likely to get involved in activities such as art, dance and music, according to research released today. F...
【单选题】The young adults who used to be aggressive but didn't watch much violent TV in childhood ______.
A.
turned out to be even more aggressive
B.
were less likely to get involved in crime
C.
showed a tendency to steal and fight aggressively
D.
became less aggressive than those watching violent TV shows in childhood
【简答题】Reading Comprehension Boys' schools are the perfect place to teach young men to express their emotions and are more likely to get involved in activities such as art, dance and music, according to rese...
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