电缆沟(隧道)应具备防水工艺,防止地面水地下水以及其它管沟内的水渗入,防止各类水倒灌入电缆沟(隧道)内;电缆沟(隧道)底面应设置纵横向排水坡度,横向排水坡度一般为(),并在沟道内有利于排水的地点及最低点设集水坑和排水引出管,集水坑坑底标高应高于下水井的排水出口标高200mm-300mm。
2023-06-22
0.5%$;$0.3%$;$1.5%~2.0%$;$1.0%~2.0%
参考答案:C
参考答案:C
![]( //img1.runjiapp.com/duoteimg/tiku/images/pc/questionBank/main-list-title-icon.png)
![](https://img1.runjiapp.com/duoteimg/tiku/banner/bn_25.jpg)
![](https://img1.runjiapp.com/duoteimg/tiku/banner/bn_22.jpg)
![](https://img1.runjiapp.com/duoteimg/tiku/banner/bn_87.jpg)
![](https://img1.runjiapp.com/duoteimg/tiku/banner/bn_59.jpg)
![](https://img1.runjiapp.com/duoteimg/tiku/banner/bn_64.jpg)
![](https://img1.runjiapp.com/duoteimg/tiku/banner/bn_45.jpg)
![](https://img1.runjiapp.com/duoteimg/tiku/banner/bn_98.jpg)
![](https://img1.runjiapp.com/duoteimg/tiku/banner/bn_46.jpg)
热门标签