发布时间:2025-01-23 09:32:50
一个宿舍住两个人,用了80元燃气费,可以以五天为一份,再用他去除80得出一份的钱,80÷7=11.43元。住15天的算11.43X3=34.29元,住20天的出11.43X4=45.72元。
钢筋网片的直径20网片长度64米宽度25米间距200单层双向钢筋钢筋网片的重量是多少
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