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【单选题】
有两个空载放大倍数相同,输入输出电阻不同的放大电路甲和乙,对同一信号进行放大,在负载开路的情况下测得甲的输出电压小,这说明甲( )。A.
输入电阻大
B.
输入电阻小
C.
输出电阻大
D.
输出电阻小
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举一反三
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