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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A.5 seconds
B.10 seconds
C.15 seconds
D.20 seconds
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
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
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
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
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（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
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