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【简答题】
某电路引入负反馈后,则该电路的带宽是开环时带宽的 ( ) 倍
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反馈参考答案：
举一反三
【单选题】听力原文：Amy Morning, Dr. Carter. Im sorry to disturb you. But may I speak to you about my course? Dr. Carter Yes, come in, Amy. But anyway, I havent got long, because I have to give a lecture in half an ...
A.
She was unwell.
B.
She was worried,
C.
She was stressed.
D.
She was depresse
【单选题】听力原文：W: Professor Li, I'm so sorry to disturb you by asking you so many questions after class. You must feel very tired of that. M: Tired? There is nothing more interesting than helping my students so...
A.
It is very boring.
B.
It is very interesting.
C.
It is a waste of time.
D.
It is his responsibility.
【单选题】Sorry to disturb you, ______ could I speak to you for a few minutes?
A.
whether
B.
but
C.
if
D.
and
【单选题】听力原文：W：Professor Li，I am so sorry to disturb you by asking you so many questions after class．You must feel very tired of that． M：Tired? There is nothing more interesting than helping my students solve...
A.
It is very boring.
B.
It is very interesting.
C.
It is a waste of time.
D.
It is his responsibility.
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