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【单选题】
在利用电平检侧电路鉴别压差方向事,如果 UG > Us ,且压差超过允许值,则( )A.
电平检测电路1动作
B.
电平检测电路2动作
C.
电平检测电路1．2动作
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举一反三
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A.
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As to
D.
In view of
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A.
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