题目内容
某混凝土实验室配合比1：2.12：4.37，水灰比为0.62，每1m3混凝土水泥用量为290Kg，实测现场砂含水率为3％，石含水率为1％，试求1m³混凝土的施工配合比和各种材料的用量。(写在作业本上拍照上传，注意图片角度及清晰度)
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