题目内容

当PN结外加反向电压时,扩散电流小于漂移电流()

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电压放大倍数是电压放大倍数是衡量放大电路放大输入信号能力的基本参数,定义为输出电压与输入电压之比,即 。()

It _________________________ (直到得到有关当局的批准) that we can start the job.

_______________________ (努力不吸入) the vapor, Thomas turned his head.

The father thought he could ______________(说服女儿改变决定)

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