單項選擇題If a small fire initially breaks out in the engine room bilges, in which of the following sequences should the fire extinguishing agents or systems be used?（）

A.Fixed CO2,semi-portable CO2, then hand portable CO2
B.Semi-portable CO2, fixedCO2, then hand portable CO2
C.Hand portable, semi-portable CO2, then as a last resort the fixed CO2 system
D.Hand portable, fixed CO2, then as a last resort the semi-portable CO2


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1.單項選擇題The term "discharge", as it applies to the pollution regulations, means（）.

A.spilling
B.leaking
C.dumping
D.All of the above

2.單項選擇題To prevent the spread of fire by convection you should （）.

A.remove combustibiles from direct exposure
B.cool the bulkhead around the fire
C.close all openings to the area
D.shut off electrical power

3.單項選擇題When welding or burning aboard a vessel, you must be certain that the space （）.

A.is properly vented
B.contains no explosive fumes
C.has no oil in the bilges
D.all of the above

4.單項選擇題The most likely place for a fire to start through the process of spontaneous combustion is in （）.

A.an electrical switchboard
B.the pressure tanks
C.the fuel oil tanks
D.the oily rag bin

5.單項選擇題Which of the circumstances listed is an exception to the garbage discharge requirements in Annex V to MARPOL 73/78?（）

A.The garbage to be discharged will sink
B.Garbage accumulation onboard has exceeded storage space
C.A person falls overboard, and a plastic ice chest is thrown for flotation
D.The destination port or terminal cannot receive garbage