发布时间:2025-01-24 14:43:56
首先算人行道面积,再求水泥砖面积,最后求需要水泥砖的数量。需要进行单位换算。
138×3×100÷(9×9)
=41400÷81
=512块
约等于512块
如果澡堂漏电会不会点到自己你穿的海绵拖鞋水位没有你拖鞋高水管是铁的
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