发布时间:2025-01-20 02:50:58
钢筋: (300*4/1000)+(1.5*4/1000)=3.6吨
混凝土:(300*4*1.2/10000米)+(1.5*4/10000米)=3.84吨
(300*4+1.5*4)*25kg/㎡=30.0吨
石头:30吨
沙子: 7.5 吨
网络电视机机顶盒是只要家里有网线买个电视机机顶盒就什么电视都能用了吗
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