单项选择题
A.C3S B.C3A C.C4AF
A.80μm筛筛余量≤10% B.80μm筛筛余量＝5－6％ C.80μm筛筛余量≤12%
A.50～60% B.62～67% C.40～45%
A.5％ B.6％ C.3.5％
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