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
[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
[单选题]A.420B.450C.500D.540
[单选题]A.420B.450C.500D.540
[单选题]A.420B.450C.500D.540
[单选题]A.420B.450C.500D.540
[单选题]A.420B.450C.500D.540
[单选题]A.420B.450C.500D.540