A.不應(yīng)少于25m B.不應(yīng)少于35m C.不應(yīng)少于45m D.不應(yīng)少于55m
A.8倍 B.6倍 C.4倍 D.2倍
A.0.075DWT B.0.060DWT C.0.050DWT D.0.040DWT