A.pressure builds up in the nozzle which causes a surge of water
B.the only opening in a passageway is the one from which the nozzle is being advanced
C.pressure in the fire hose drops below 100 psi
D.a bulkhead collapses due to heat and pressure
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A.is effective if used promptly on an oil fire
B.has a greater cooling effect than water
C.is lighter than air
D.is harmless to cargo and crew
A.use different fire hose pressures
B.use fire hoses of different sizes
C.not attack the fire from opposite sides
D.not wear protective clothing
A.First aid kit
B.Axe or cutting torch
C.Fire extinguisher
D.Chafing gear
A.When attacking the fire directly
B.When using a steam smothering system
C.When using the fixed CO2 system
D.All of the above
A.Blanket the cargo spill with foam
B.Prevent the spread of fire with a foam dam
C.Apply CO2 on burning fuel at its source
D.Shut off the transfer of cargo
最新試題
When inspecting a tank barge to see that it has all the required fire extinguishers and other safety items aboard，which of the following is the best source for determining what is required?（）
Which item is NOT included in the fireman’s outfit on a cargo vessel?（）
Which fire extinguishing agent can NOT be used on an ethylenediamine?（）
Which fire extinguishing agent has the greatest capacity for absorbing heat?（）
Which space(s) on your cargo vessel must have a fire detection system?（）
Which extinguishing agent is NOT recommended in the Chemical Data Guide for use on a cyclohexane fire?（）
Which precaution should be taken when testing a line throwing gun?（）
When should a fire be ventilated?（）
When two fire hose teams are attacking a fire they should（）.
When using a high-velocity fog stream in a passageway，the possibility of a blow back must be guarded against. Blow back is most likely to occur when（）.