题目内容

What do you say to introduce your competence?

A. My spoken English is just so-so.
B. I have learned first aid knowledge.
C. I get lost easily.

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What do you say to introduce your personal information?

A. I am … years old.
B. There are ... persons in my family.
C. I am studying ……in…College.

第四章放大电路的频率响应

2.放大电路电压放大倍数的幅值与信号频率的函数关系称为特性，相位与信号频率的函数关系称为特性。

3.放大电路在高频信号作用时放大倍数数值下降的原因是和电容的存在，而低频信号作用时放大倍数数值下降的原因是和电容的存在。