发布时间:2025-01-29 16:02:10
正常情况下,燃气热水器是不需要除垢的,因为一般洗澡的温度在40度左右,并且燃气热水器是即热式的,这样的水温是不会结垢的
我想在院子里铺砖可是现在院子里是松软土层是不是在打混凝土之前要硬化一下土层怎么硬化
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