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【单选题】
下面说法错误的是（）。
A.
在输入电压为零时，甲乙类双电源功放的电源所消耗的功率是两个管子的静态电流与电源电压的乘积
B.
当乙类功率放大电路的输出功率最大时，管子消耗的功率不是最大
C.
功放管的极限参数 是集电极最大电流 与基极开路时集电极-发射极极间反向击穿电压 的乘积
D.
当甲类电压放大电路的输出功率为零时，管子消耗的功率最大
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