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工作在放大区的三极管,当IB从20μA增大至40μA时,Ic从1mA变为2mA,其值约为( )

单选题
2021-09-01 19:48
A、放大倍数小于0
B、直流电源是负电源
C、同相放大
D、反相放大
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正确答案
D

试题解析

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