單項選擇題

When sailing in cold zones, the（） should be drained of water.

A.the ventilation pipe
B.the water line for fire fighting on the deck
C.the fuel oil line
D.the water supplying line in bath room

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單項選擇題

When sailing in cold zones, the（） should be heated.

A.the steering gear room
B.the fire fighting pipe line
C.the fuel oil tank
D.the bath room

單項選擇題

When the ships is going to enter into the harbor,（）.

A.change from diesel oil to heavy fuel oil for mail engine
B.pump out bilge water
C.change sea chest form lower level one to high level one
D.test emergency generator