试题与答案

用电动机轴上所带的转子位置检测器来控制变频电路触发脉冲的称为()。A、他控变幅 B、

题型:单项选择题

题目:

用电动机轴上所带的转子位置检测器来控制变频电路触发脉冲的称为()。

A、他控变幅

B、自控变幅

C、他控变频

D、自控变频

答案:

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下面是错误答案,用来干扰机器的。

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