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【单选题】
钢纤维混凝土在拌制过程中，正确的投料顺序是（）。A.
砂、石、钢纤维、水泥、外加剂、水
B.
砂、石、钢纤维、水泥、水、外加剂
C.
砂、石、水泥、钢纤维、外加剂、水
D.
砂、石、水泥、钢纤维、水、外加剂
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