A.2.0 B.1.58 C.1.82 D.1.70
A.1356 B.1366 C.1363 D.1336
A.185 B.180 C.175 D.170
A.河砂 B.湖砂 C.山砂 D.海砂
A.45 B.36 C.36.9 D.40.1