题目内容

要使三极管工作在饱和区,则需发射结正偏,集电结反偏。

A. 对
B. 错

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要使三极管工作在截止区,则需发射结反偏,集电结反偏。

A. 对
B. 错

满足IC=βIB的关系时,三极管一定工作在放大区。

A. 对
B. 错

The proposal put forward yesterday a lot of attention.

A. attracted
B. gathered
C. assembled
D. yielded

I didn't tell her the truth,but I her.

A. ought tell
B. must have told
C. must tell
D. should have told