发布时间:2025-02-07 00:52:41
吊顶上的灯是不会掉下来的,灯一般是在楼顶上的打膨胀螺丝,然后受力点是系在膨胀螺丝上,不是受力在铝扣板上的。
我是刚学造价预算的我接到一个活对一个办公楼装修有拆除和装修什么时候修缮定额什么时候
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