Thursday, September 15, 2022
Thursday, September 15, 2022
问题:竣工图和原施工图、各种签证变更一起存档保管,但不能作为决算和今后...
Monday, September 12, 2022
Thursday, September 15, 2022
问题:电路一般有()构成.A、电源B、负载C、导线D、控制设备...
Saturday, March 16, 2024
问题:直流电动机如要实现反转,需要对调电柜电源的极性,其励磁电源的极性...
Thursday, September 15, 2022
问题:对中小型电力变压器,投运运行后每隔()要大修一次。...
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:电梯减速箱蜗轮蜗杆中心距大于630~1250mm,标准保证侧隙为...
Thursday, September 15, 2022
Monday, September 12, 2022
Thursday, September 15, 2022
问题:下列哪种级别属于危险级别最高的爆炸危险环境()。A、0区B、1区C、2区...
Friday, July 28, 2023
Thursday, September 15, 2022
问题:精密度是指重复测量所得结果相互接近程度,反映的是偶然误差(随机误差)大小的程度。()...
Tuesday, October 24, 2023
问题:介质损失角tgδ的实测值为负值时,说明被测设备根本没有介质损失。...
Monday, September 12, 2022
问题:送电操作应先合上负荷侧刀闸,再合母线侧刀闸。()...
Monday, September 12, 2022
问题:明敷接地线时,接地线支持件间的距离在水平直线部分宜为()m。A、0.5-1.5mB、1.5-3.0C、0.3-0.5...
Tuesday, September 19, 2023
问题:按照交流电动机参数分类,交流电动机凋速方法有()....
Thursday, September 15, 2022
问题:在充油电气设备上取油样,应在天气干燥时进行。()...
Thursday, September 15, 2022