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【单选题】
负反馈多用于 。A.
改善放大器的性能
B.
产生振荡
C.
提高输出电压
D.
提高输出电流
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反馈参考答案：
举一反三
【单选题】His conduct at the conference is regarded as being _____ unacceptable. [ ]
A.
notably
B.
firmly
C.
seriously
D.
totally
【单选题】He has trouble understanding that otherpeople judge him by his conduct
A.
style
B.
behavior
C.
mode
D.
attitude
【单选题】She didn‘t approve of his conduct ______ his former employers。
A.
by means of
B.
in terms of
C.
with regard to
D.
in line with
【简答题】He had to justify himself for his conduct.
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