A.4.5m B.5.0m C.5.5m D.6m
A.5~10mm厚水泥漿 B.5~100mm厚水泥漿 C.50~100mm厚水泥漿 D.500mm厚石子增加一倍的混凝土
A.15N/mm2 B.255N/mm2 C.21N/mm2 D.30N/mm2