單項選擇題

Kapok life jackets should not be（）.

A.stowed near open flame or where smoking is permitted
B.used as seats, pillows, or foot rests
C.left on open decks
D.All of the above

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單項選擇題

Keeping the draft at or below the load line mark will insure that the vesselhas adequate（）.

A.ballast
B.reserve buoyancy
C.displacement
D.rolling periods

單項選擇題

Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed space, such as in the pumproom, provided that the（）.

A.persons in the space wear gas masks
B.persons in the space wear damp cloths over their mouths and nostrils
C.ventilation system is secured and all persons leave the space
D.ventilation system is kept operating