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对于放大电路而言,所谓开环是指 ( ) 。
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对于放大电路而言,所谓开环是指 ( ) 。
A、无信号源
B、无反馈通路
C、无电源
D、无负载
时间：2021-09-01 23:25
关键词：
青书学堂
内蒙古农业大学
计算机基础
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B
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对于放大电路,所谓开环是指( )(本题5分)
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对于放大电路而言,所谓开环是指 ( ) 。
对于放大电路,所谓开环是指( )
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