單項選擇題In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by （）.

A.convection
B.conduction
C.radiation
D.ventilation


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1.單項選擇題When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.

A.air from contacting the oil vapors
B.permitting re-ignition boiling of the heated oil
C.spontaneous combustion below the oil surface
D.toxic fumes from escaping to the surface

2.單項選擇題The process that occurs when heat is generated by a chemical reaction within a substance and continues to a point of ignition is known as （）.

A.chemical ignition
B.spontaneous combustion
C.chemical combustion
D.radiation ignition

3.單項選擇題A vessel sailing through the specific special areas may discharge or dispose of （）.

A.incinerated ash at anytime
B.fairly dense material that will sink, i√emetal cans or glass bottles at anytime
C.victual waste when at least 12 nautical miles from shore
D.absolutely no garbage at anytime

4.單項選擇題In order to find out which lifeboat you are assigned, you should look at the （）.

A.fire control plan
B.certificate of inspection
C.muster list
D.ships articles

5.單項選擇題Fire and lifeboat stations are required to be listed on the （）.

A.ships articles
B.muster list
C.bunk card
D.forecastle card