问题
单项选择题
When a pushing vessel and a vessel()ahead are rigidly connected in a composite unit they shall be regarded as a power-driven vessel.
A.is pushed
B.being pushed
C.was pushed
D.be pushed
答案
参考答案:B
When a pushing vessel and a vessel()ahead are rigidly connected in a composite unit they shall be regarded as a power-driven vessel.
A.is pushed
B.being pushed
C.was pushed
D.be pushed
参考答案:B