题目内容

为了提高放大器的动态性能，应引入____负反馈。

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搜索结果不匹配？点我反馈

更多问题

若放大电路的A小于零，则接入的反馈一定是负反馈；若放大电路A的大于零，则接入的反馈一定是正反馈。

A. 对
B. 错

The ______ opened the meeting by greeting the visitor from China.

A. participant
B. apprentice
C. chairwoman
D. secretary

The ______ was distributed to the participants ten days before the meeting.

A. agenda
B. minutes
C. menu
D. summary

It can be very______ and sometimes not very effective to have meetings every week.

A. routine
B. vital
C. punctual
D. inconvenient