A.灰土 B.淡水细沙或细土 C.淤泥
A.48;3 B.24;3 C.72;3
A.钢材的最低屈服强度为290KPa B.钢材的最高屈服强度为290MPa C.钢材的最低屈服强度为290MPa
A.0~15% B.-5%~10% C.-10%~10%