A.lighter than air
B.heavier than air
C.odorless
D.nontoxic
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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
A.is properly vented
B.contains no explosive fumes
C.has no oil in the bilges
D.all of the above
A.an electrical switchboard
B.the pressure tanks
C.the fuel oil tanks
D.the oily rag bin
最新試題
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