單項(xiàng)選擇題The most likely time for oil pollution while bunkering is when().

A.final topping off is occurring
B.first starting to receive fuel
C.hoses are being blown down
D.hoses are disconnected and being capped


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1.單項(xiàng)選擇題Smoking in bed on a ship is prohibited().

A.at all times
B.during evening hours
C.unless another person is present
D.during drilling operations

3.單項(xiàng)選擇題Proper use shall be made()radar equipment if fitted and operational.

A.of
B.to
C.on
D.with

4.單項(xiàng)選擇題Keep clear()the buoy.

A.to
B.on
C.of
D.for

5.單項(xiàng)選擇題In the International Code of signals,a group of three letters indicates().

A.urgency or an emergency
B.the vessel's national identity signal
C.a group from the general signal code
D.a group from the medical signal code