Wednesday, October 9, 2024
Thursday, September 15, 2022
Tuesday, May 14, 2024
Tuesday, October 10, 2023
Sunday, September 11, 2022
Tuesday, November 5, 2024
Saturday, May 4, 2024
问题:雷达站建(构)筑物的外部防雷设计应按GB50057-94()防雷建筑物的要求进行设计。...
Wednesday, March 20, 2024
问题:预计雷击次数大于或等于几次/a,且小于或等于几次/a的住宅办公楼...
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:北京火车站属于第几类防雷建筑物?解释什么是保护线(PE线)?...
Tuesday, January 30, 2024
问题:请写出图中雷电流的分配比例:分配在信号线、各种管线上和电力线上的雷电流总和的();分配在接地装置上的雷电流为()。...
Sunday, June 1, 2025
Tuesday, June 20, 2023
问题:电涌保护器和与之相连接的()一起耐受的短路电流应()安装处预期产...
Sunday, September 11, 2022
Thursday, September 15, 2022
问题:省广播电视大楼属于第几类防雷建筑物?解释什么是接闪器?...
Sunday, September 11, 2022
问题:建筑图样(平、立、剖面)中所标注的尺寸以()为单位。A、米B、分米C、毫米D、厘米...
Sunday, June 1, 2025
Sunday, September 11, 2022
Saturday, September 23, 2023
问题:避雷针及其衍生的各种室外避雷系统实际上是一种()。A、防雷系统B、避雷系统C、引雷系统D、消雷系统E、避雷针系统...
Saturday, May 4, 2024