A.3d B.7d C.14d D.28d
A.2m B.2.5m C.3m D.3.5m
A.0.7 B.0.8 C.0.85 D.0.9
A.烧结普通砖 B.烧结多孔砖 C.蒸压灰砂砖 D.粉煤灰砖
A.1/5 B.1/3 C.1/2 D.1/4
A.小于 B.等于 C.大于 D.不小于
A.朝上 B.朝下 C.朝水平方向 D.无要求
A.不需 B.需要 C.严禁 D.不做要求
A.150mm B.200mm C.100mm D.250mm
A.7d B.10d C.14d D.28d