Saturday, September 17, 2022
Monday, September 12, 2022
Saturday, September 17, 2022
Friday, March 17, 2023
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:雷电侵入波前行时,如遇到()状态的线路开关,会发生行波的全反射而...
Monday, September 12, 2022
Saturday, September 17, 2022
问题:对高压电缆外屏蔽的要求之一是:在()电压下不能出现电晕。...
Monday, September 12, 2022
问题: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
问题:电动力的影响并不足以使单芯电缆之间产生相互的排斥力()。...
Friday, September 16, 2022
Saturday, September 17, 2022
Tuesday, September 13, 2022
Monday, September 12, 2022
问题:直埋敷设电缆埋设深度,从电缆外皮到地面应符合什么规定?...
Monday, September 12, 2022
问题: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
问题:在室内发现高压设备接地时,不得接近故障点()米。...
Monday, September 12, 2022
问题: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
问题: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
问题:聚四氟乙烯(定向)薄膜,抗拉强度为()kg/mm<sup>2</...
Monday, September 12, 2022