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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