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搜题
【单选题】
需要一个阻抗变换电路，要求输入电阻小，输出电阻大，用（ ）。A.
电压并联负反馈
B.
电压串联负反馈
C.
电流串联负反馈
D.
电流并联负反馈
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【简答题】闰盘
【简答题】闰盘
【单选题】Everything all right. Let's a good rest. [ ]
A.
are, have
B.
are , has
C.
is, have
D.
is, has
【简答题】闰盘
【单选题】Liu Dehua has set up a new record, that is, the sales of his last record ______ 100 million ．
A.
． have reached
B.
． has reached
C.
． are reaching
D.
． is reaching
【单选题】The author seems to suggest that the defect in corporate power of the late 1990' s
A.
has been exaggerated.
B.
has not been removed.
C.
has been rectified.
D.
has not been deceived.
【简答题】闰盘
【简答题】闰盘
【简答题】闰盘
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