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【单选题】
基本 RS触发器禁止A.
端、 端同时为 1
B.
端为0、 端为 1
C.
端、 端同时为 0
D.
端为1、 端为 0
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A.
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B.
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【单选题】Pop music is such an important part of society it has even influenced our language. [ ]
A.
as
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that
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