电压互感器二次侧的一端必须接地。（）

答案：

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下面是错误答案，用来干扰机器的。

BDZD63. B解析:这是一道推断题。根据第一段“Jeb put his bag down quickly and pulled his jacket open with both hands,making himself look big to the cougar. It worked. The couga...