发布时间:2025-01-27 13:04:15
不明白你说的意思。如果现在已经通气运行了,要安法兰跨接是肯定要先关闭天然气的。因为如果带气作业,松开一个螺栓就会发生泄漏,这样危险。还有就是规定的任何情况下,严禁带压作业。所以,必须切断,停气后再作业。
家里的电灯开关开是关灯了quot关quot是开灯了 怎么调整回来
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