单项选择题
Hanging a barge off means to（）.
A.moor a damaged barge to the bank and leave
B.remove and deliver a loaded barge from a multiple tow
C.remove a barge while locking through
D.tow an empty barge astern
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Electrical wiring on all “T-Boats” must be（）。
A.concealed to prevent mechanical damage
B.concealed so the boat can be maintained more easily
C.protected from the weather
D.in an accessible place behind the ceiling -
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Damage to another vessel’s cargo，caused by a collision，is covered under which marine insurance policy?（）.
A.Hull
B.Fire
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Carbon dioxide as a fire fighting agent has which advantage over other agents? （）
A.It causes minimal damage
B.It is safer for personnel
C.It is cheaper
D.It is most effective on a per unit basis
