[单选题]

A.触点KM1和KM2因未接入电路均处于断开状态

B.触点KM1闭合,KM2不变

C.触点KM1闭合,KM2断开

D.触点KM1不变,KM2断开

参考答案与解析:

相关试题

<img border="0" style="width: 619px; height: 123px;" src="https://img.zh