單項選擇題Pump out No.2 port ballast tank to（）.

A.keep vessel afloating
B.refloat vessel listing to starboard
C.make vessel all-right
D.bring vessel upright


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1.單項選擇題Protective clothing must be worn while sampling hazardous cargo on a tanker，and as a minimum includes（）.

A.a hood or hard hat
B.a face mask or goggles
C.boots
D.chemical resistant gloves

3.單項選擇題On a vessel carrying grades A，B，C or D cargoes，enclosed spaces where sources of vapor ignition are normally present shall NOT be segregated from cargo tanks by（）.

A.cofferdams
B.galleys
C.pump rooms
D.tanks used to carry liquids having a flash point of 150°F or above

4.單項選擇題Oil may NOT be transferred unless（）.

A.there are two certificated tankermen on each vessel
B.the vessel is equipped with constant-tension winches
C.discharge containment equipment (i.e. drip pans) are in place
D.All of the above

5.單項選擇題Of the following，the most important consideration for a tanker is（）.

A.GM
B.the vertical center of gravity
C.the longitudinal center of gravity
D.the stress on the hull