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【单选题】
运算放大器电路如图所示,输入电压 u i = 2V ,则输出电压 u O 等于 ( ) 。A.
2V
B.
正饱和值
C.
负饱和值
D.
-2V
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A.
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B.
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C.
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A.
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B.
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D.
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A.
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B.
anyone
C.
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D.
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