直流稳压电源电路中，辅助稳压电源的目的是避免输入端电压波动对_爱下问搜题

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问题单项选择题

直流稳压电源电路中，辅助稳压电源的目的是避免输入端电压波动对（）和调整管工作产生不良的影响。

A.滤波电容

B.整流电路

C.稳压管

D.差动放大器

答案

参考答案：D

选择题

— What do you think our manager is going to do this afternoon?
— He _____ to attend a business meeting.

A. supposes
B. is supposing
C. is supposed
D. has supposed

问答题简答题

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