工作在放大区的某三极管 , 当 I B 从 20μA 增大到 40μA 时 ,I C 从 1mA 变为 2mA, 则它的 值约为
A.
10
B.
50
C.
100
D.
200
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参考答案:
举一反三
【简答题】A.She did better on the quiz than the man did. B.She did not have to take the quiz. C.She has not yet received her grade on the quiz. D.She did not do well on the quiz.