A.0.25～0.60% B.0.25~0.8% C.0.5~0.8% D.0.35~0.6%
A.略大于 B.略小于 C.等于 D.1.5倍
A.表观密度 B.堆积密度 C.干表观密度 D.干堆积密度
A.28d B.30d C.14d D.3d
A.0.85 B.0.8 C.0.7 D.0.9
