电缆线路附属的杆塔、隧道、桥梁和房屋应每年检查()次。...
Saturday, September 17, 2022
Saturday, September 17, 2022
把长度一定的导线的直径减为原来的一半,其电阻值为原来()。A、2倍B、1/2倍C、4倍D、1/4倍...
Friday, December 2, 2022
电力电缆头制作时,接地线应采用铜绞线或镀锡铜编织线,150mm<...
Monday, September 12, 2022
利用滚动法搬运设备时放置滚杠数量有一定的要求,如滚杠较少,所需牵...
Saturday, September 17, 2022
电缆应装设标志牌的地方有()A、电缆终端头B、电缆沟内C、电缆中间接头处D、隧道及竖井的两端...
Tuesday, October 10, 2023
Monday, September 12, 2022
Saturday, September 17, 2022
Monday, September 12, 2022
Saturday, September 17, 2022
电缆附件密封圈应与其周围绝缘介质相容,并能在额定负荷下长期使用(...
Monday, September 12, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Tuesday, September 13, 2022
Monday, September 12, 2022
电力系统的停电时间包括()。A、事故停电B、临时性停电时间C、计划检修停电D、限电...
Friday, March 17, 2023
一只2000W的电炉子,每天使用12小时,使用一年消耗多少电能(...
Monday, September 12, 2022
Saturday, September 17, 2022
Wednesday, April 24, 2024