某一弛度观测档,其弛度大于两端铁塔高度,宜采用“平行法”观测。...
Monday, September 12, 2022
某杆塔的水平档距与垂直档距相等时,垂直档距大小不随气象条件的变化...
Friday, September 16, 2022
哪些地方是重污区线路()。A、杆塔周围修建的水产养殖场B、III级及以上污秽地区,如:化工厂、冶炼厂周围2公里C、杆塔基础周围挖沙、取土、倾倒腐蚀性化学物质D、杆塔接地电阻不合格的线路...
Saturday, September 30, 2023
Friday, September 16, 2022
Monday, September 12, 2022
Tuesday, September 13, 2022
因钢绞线的电阻系数较大,所以在任何情况下不宜用作导线。...
Friday, September 16, 2022
Friday, September 16, 2022
避雷针或避雷线的作用是吸引雷电击于自身,并将雷电流迅速泄入大地,...
Monday, September 12, 2022
Friday, September 16, 2022
Thursday, January 11, 2024
Friday, September 16, 2022
在交叉跨越铁路放、拆线时,应先取得()同意后,方可进行。...
Tuesday, September 13, 2022
Friday, September 16, 2022
采用楔型线夹连接好的拉线应符合哪些规定?架线后对全部拉线进行检查和调整,应符合哪些规定?...
Saturday, May 27, 2023
Monday, September 12, 2022
线路的转角杆组立后,其杆塔顺线路方向的前后移动误差尺寸不得超过(...
Friday, September 16, 2022
Saturday, September 17, 2022
Friday, September 16, 2022