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【简答题】
已知某混凝土的试验配合比水泥:砂:石子(C: S : G ) =1 : 2 : 4 ,水灰比( W/C ) =0.6 ,每立方米混凝土中水泥的用量为 300Kg ,砂的含水率为 5% ,石子的含水率为 2% 。求 1m 3 混凝土各组成材料的实际用量。
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