A.絞吸船直接吹填 B.耙吸船吹填 C.斗式船-泥駁-吹泥船吹填 D.絞吸船加泵站吹填
A.1%~5% B.5%~10% C.10%~15% D.15%~20%
A.5% B.10% C.15% D.20%