11.Bilge keels are fitted on ships to _______.
A.assist in dry dock alignment
B.improve the vessel’s stability
C.protect the vessel from slamming against piers
D.reduce the rolling of the vessel
正确答案是D
11.Bilge keels are fitted on ships to _______.
A.assist in dry dock alignment
B.improve the vessel’s stability
C.protect the vessel from slamming against piers
D.reduce the rolling of the vessel
正确答案是D