單項選擇題CO2 extinguishes a fire by （）.

A.a blanket of bubbles formed on the surface of the fire
B.smothering
C.cooling
D.isolating the heat from the fuel


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1.單項選擇題How long warning must be provided by the CO2 warning Mann before CO2 is discharged into a space （）.

A.5 seconds
B.10 seconds
C.15 seconds
D.20 seconds

2.單項選擇題Which statement regarding garbage disposal is correct?（）

A.Records for ground garbage disposal are not required when disposal into the sea occurs more than 25 miles offshore
B.Discharging or transfer of garbage while in port to a shore facility must he recorded
C.Maintaining records for the incineration of garbage aboard ship is not required
D.The recording of garbage disposal should include the approximate weight

3.單項選擇題The sections of an Oil Record Book proceeding the log pages contain a （）.

A.damage control plan for isolating fire main valves
B.list of machinery space operation items
C.complete classification of hazardous materials
D.detailed listing of all organizations to call in the event of an accidental oil spill

4.單項選擇題If an incorrect entry were made in the Oil Record Book, you should （）.

A.erase the entry and rewrite it
B.notify the ships officer-in-charge
C.completely black it out and make the correct entry alongside
D.draw a single line through the wrong entry and initial it

5.單項選擇題If you observe any situation which presents a safety or pollution hazard during fuel transfer operations, which of the following actions should be taken FIRST?（）

A.Close the valves at the transfer manifold
B.Notify the person in charge of the shore facility
C.Shut down the transfer operation
D.Sound the fire alarm