题目内容

Before entering an interview room, you should ask politely:__________.

A. How are you doing, madam?
B. May I come in?
C. Let us have a chat, shall we?

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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.

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。