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【单选题】
当运算放大器不加反馈时，其工作状态是（ ）。A.
线性
B.
非线性
C.
线性和非线性都有可能
D.
其他选项都错误
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反馈参考答案：
举一反三
【单选题】What do we learn about biased thinking?
A.
It may affect anyone
B.
It is more likely to affect the well-educated
C.
It rarely affects people at higher levels.
D.
It remains to be studied further
【单选题】Passage 1--- 3. What do we learn about dialect coaches?
A.
They are well-paid.
B.
They are usually females.
C.
It is easy to become a dialect coach.
D.
A degree in linguistics may be a must to them.
【单选题】What do we learn about the author of the book?
A.
The author is a competent leader of a company.
B.
The author has worked with a number of companies.
C.
The author is an experienced consultant for companies.
D.
The author has helped many people become successful leaders.
【单选题】What do we learn about dialect coaches?
A.
They are well-paid.
B.
They are usually females.
C.
It is easy to become a dialect coach.
D.
A degree in linguistics may be a must to them.
【单选题】What do we learn about Mr Lee’s company?
A.
It doesn't employ translators directly
B.
It produces translation service apps
C.
Its income keeps increasing in recent years
D.
It aims to open branches all around the world
【单选题】What do we learn about the woman?
A.
She is eager to take a space tour.
B.
She hopes the space tour can be cheaper.
C.
She has no interest in taking a space tour.
D.
She hopes to take a space tour with the man.
【单选题】What do we learn about Jill Watson?
A.
She turned out to be a great success.
B.
She got along pretty well with students.
C.
She was unwelcome to students at first.
D.
She was released online as an experiment.
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