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单选题
After extinguishing a fire with C02,it is availabe to（）.
A
use all CO2 available to cool the surronding area
B
stand by with water or other agents
C
thoroughly ventilate the space of CO2
D
jettison all buring materials
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单选题A class B fire is most successfully fought by（）.A
preventing oxygen from reaching the burning materialB
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contaminating food with extinguishing agentB
shutting all sources of air into the compartmentC
closing the sea chestD
a grease fire in the ventilation system
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单选题The basic training in fire prevention and fire fighting should include the theoretical elements which should cover （）.A
the three elements of fire and explosionB
lower and upper flammable limitsC
classification of flies and applicable extinguishing agentsD
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单选题Which is a disadvantage of Halon as a fire extinguishing medium?（）A
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Difficult to storeC
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单选题Generally, the first action in extinguishing an LFG fire caused by escaping gas is to（）.A
sweep flames away with water sprayB
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单选题Your vessel is equipped with a fixed C02 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）.A
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单选题A fire pump may be used for other purposes if（）.A
the other services are run off a reducing station with a pressure gageB
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no relief valves are installedD
all of the above conditions are met
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remove oxygen from the areaB
cool fuel below ignition temperatureC
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单选题What method of extinguishing fire in a hatch is the best to minimize damages to the cargoes?（）.A
FoamB
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单选题What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）A
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单选题Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?（）A
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单选题The fire extinguishing action of CO2 comes mostly from （）.A
breaking the fire chemical chain reactionB
smotheringC
coolingD
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考题
单选题The best method of extinguishing a class A fire is to （）.A
remove oxygen from the areaB
smother fire with foamC
smother fire with CO2D
cool fuel below ignition temperature
考题
单选题Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.A
sweep flames away with water sprayB
shut off the leakC
use a chemical foam fire extinguisherD
call the local fire department
考题
单选题After extinguishing a fire with CO2，it is advisable to（）.A
use all CO2 available to cool the surrounding areaB
stand by with water or other agentsC
thoroughly ventilate the space of CO2D
jettison all burning materials
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