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诺顿定理指出:一个含有独立源、受控源和电阻的线性一端口,对外电路来说,可以用一个电流源和一个的并联组合进行等效变换。关于诺顿定理,以下说法正确的是( )。A.
等效电流源的电流等于所有独立电流源的电流和
B.
等效电流源的电流等于一端口的短路电流
C.
等效电导等于该一端口全部电源置零后的输入电导
D.
等效电导等于该一端口全部独立电源置零后的输入电导
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