问题
单项选择题
()water is the water in the hold to keep the ship’s stability.
A.Bilge
B.Ballast
C.Slop
D.Sanitary
答案
参考答案:B
()water is the water in the hold to keep the ship’s stability.
A.Bilge
B.Ballast
C.Slop
D.Sanitary
参考答案:B