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【单选题】
为了增大电压放大倍数,集成运放的中间级多采用( )A.
共射放大电路
B.
共集放大电路
C.
共基放大电路
D.
共漏极放大电路
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反馈参考答案：
举一反三
【单选题】He smiled at me _____ my help, saying nothing at that moment. [ ]
A.
in respond to
B.
in response to
C.
responded to
D.
responding
【单选题】I thought he would angry with me, but he smiled.
A.
to my surprise
B.
to my shame
C.
to my regret
D.
to my suspicion
【简答题】He smiled, with the ____that he didn't believe me. (imply)
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