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电缆穿过墙壁部分应用套管保护,并要密封管口

判断题
2021-09-01 23:38
A、正确
B、错误
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正确答案
B

试题解析

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电缆穿过墙壁部分应用套管保护,并要密封管口
气体灭火系统管道穿过墙壁、楼板处应安装套管。套管公称直径比管道公称直径至少应大级,穿墙套管长度应与墙厚相等,穿楼板套管长度应高出地板()
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