题目内容

黑表笔接三极管的基极,红表笔接另两极时,阻值均小为()型三极管。

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At the conferenceyesterday, our differences were further_______ .The next step is to work out a solution acceptable to both sides.

A.narrowed down
B.cooled down
C.driven home
D.brought about

一般硅材料二极管的正向电阻为几千欧。

A. 对
B. 错

正向电阻越小,反向电阻越大的二极管的质量越差。

A. 对
B. 错

This entrance is in_______ use :do not block it.

A.constant
B.tender
C.creative
D.critical

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