A.sufficient oxygen to sustain human life
B.an explosive mixture in the compartment
C.a toxic atmosphere in the compartment
D.All of the above
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A.posting a fire watch in the immediate area
B.providing an extinguisher which is ready for immediate use
C.requiring the fire watch to remain on post for 30 minutes after the completion of welding or burning
D.All of the above
A.lighter than air
B.heavier than air
C.odorless
D.nontoxic
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
A.spilling
B.leaking
C.dumping
D.All of the above
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
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The shipboard oil pollution emergency plan will be invalid after （）
（） is not installed on the main switchboar.
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
Diesel engine air start system check valves are opened by （）
To proceed to the assistance of a ship in distress is（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Cold weather starting of a diesel engine may be made easier by（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）