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【单选题】
若不等式 的解集为 ,则 的值为(   )
A.
B.
C.
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【单选题】集成运放电路采用直接耦合方式是因为
A.
可获得很大的放大倍数
B.
可使温漂小
C.
集成工艺难于制造大容量电容
D.
以上答案都不对
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A.
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which
C.
when
D.
that
【单选题】集成运放电路采用直接耦合方式是因为 。
A.
可获得很大的放大倍数
B.
可使温漂小
C.
集成工艺难于制造大容量电容
D.
电源电压不稳定
【单选题】—What ______ you ______ when the phone rang? —I was washing my hair in the bathroom. [     ]
A.
were, doing
B.
was, doing
C.
did, do
D.
are, doing
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【单选题】りょうしんに てがみ をかきました。
A.
B.
手紙
C.
封筒
D.
便箋
【单选题】集成运放电路采用直接耦合方式是因为:
A.
零漂小
B.
能放大交直流信号
C.
集成工艺难于制造大容量电容
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