单项选择题
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
相关考题
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单项选择题
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 -
单项选择题
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 -
单项选择题
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
