问题:一经合闸即可送电到工作地点或施工设备的开关和刀闸的操作把手上应悬挂()标示牌A、禁止合闸,线路有人工作;B、禁止合闸,有人工作;C、在此工作
Thursday, October 3, 2024
Wednesday, November 20, 2024
Monday, August 12, 2024
Wednesday, November 20, 2024
问题:钳形电流表时应先用()A、较大量程;B、较小量程;C、最小量程;D、无量程
Thursday, May 16, 2024
Monday, November 4, 2024
Tuesday, June 4, 2024
Monday, August 12, 2024
Thursday, October 3, 2024
Sunday, February 25, 2024
问题:碳刷装入刷握内要保证能够上下自由移动,碳刷与刷握内壁的间隙()之间,以避免碳刷与刷握之中间隙过大摆动。
Wednesday, November 20, 2024
问题:钳型电流表的工作原理是()A、静电感应;B、电磁感应;C、趋肤感应
Thursday, December 14, 2023
Monday, November 4, 2024
Monday, November 4, 2024
Wednesday, August 7, 2024
问题:旭阳调试液压站时,需要设定的上限(),下限().偏航伴压刹车的伴压为()
Thursday, October 3, 2024
Wednesday, August 7, 2024
Monday, November 4, 2024
问题:携带式电气设备的绝缘电阻不低于()兆欧A、1;B、2;C、4
Monday, November 4, 2024