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【简答题】
负反馈能够改善放大电路的性能，例如它可以提高增益的稳定性， [填空(1)] ， [填空(2)] ， [填空(3)] 等。 A. 减小放大器引起的非线性失真 B. 扩展通频带 C. 改变放大电路的输入电阻和输出电阻
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反馈参考答案：
举一反三
【简答题】A big company wanted a clerk, so John went there. In the interview the director(主管) asked him a question. “Who paid for your school?’ “My mother paid for it by washing clothes.” Hearing this, the dire...
【简答题】A．Light rain. B．Heavy rain. C．Lightning. D．Heavy snow
【单选题】He felt curious that he asked many questions about it.
A.
such , such
B.
so , so
C.
such , so
D.
so , such
【单选题】John asked so many questions that he ___ me.
A.
neglected
B.
wondered
C.
confused
D.
gained
【简答题】Snow-melting Agent A heavy snow can kill pests and this means a good harvest next year.This will bring as well as trouble to ites. On Nov.16,2003,a cold air current brought a heavy snow to Beijin...
【简答题】阅读理解。 A big company wanted a clerk, so John went there. In the interview the director asked him a question. 'Who paid for your school?' 'My mother paid for it by washing clothes.' Hearing this, the di...
【简答题】heavy snow
【简答题】Many of her answers were _____ (correct), so she was asked to do the exercises again.
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