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单选题
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
A
completely closing the compartment
B
closing the compartment except for the ventilators
C
leaving the compartment open to the air
D
increasing the air flow to the compartment by blowers
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更多 “单选题Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.A completely closing the compartmentB closing the compartment except for the ventilatorsC leaving the compartment open to the airD increasing the air flow to the compartment by blowers” 相关考题
考题
After a fire has been extinguished in a closed space, personnel may safely enter the space whenA.smoke density has been decreased sufficiently to see the bulkhead opposite the compartment's entranceB.a lifeline and explosion proof flash light are usedC.all smoke and toxic fumes are removed and an adequate oxygen supply is presentD.overhaul has been completed to remove any possible source of re-ignition
考题
材料：Condor a catamaran vessel operating between the Channel Islands and France．The vessel has two main engines in each hull．All propulsion units are duplicated，with each set independent from the other．Shortly after leaving St Helier，Jersey，with 31 passengers and 18 crew，the fire alarm sounded indicating a fire in the starboard engine room．This was confirmed by the closed circuit television surveillance system which showed flames in the vicinity of the starboard outer main engine．The vessel was immediately stopped，all machinery in the starboard engine room was stopped and the fuel supplies shut down．Jersey Radio was informed of the situation two minutes after the alarm sounded. After closing all ventilation openings and accounting for all personnel，halon fire smothering gas was released into the starboard engine room．This was done five minutes after the fire alarm first sounded. The crew maintained boundary cooling and intermittently operated the sprinkler system to the affected space．Twenty minutes after the alarm sounded the situation was considered to be under control．Using the port main engines the vessel returned to St Helier where assistance was available from shore based emergency services．问题：Condor has two ________ main engines．A.combinedB.independentC.coupleD.doubleThe fire accident happened in ________．A.both the engine roomsB.neither engine roomsC.the port engine roomD.the starboard engine roomThe fire was mainly extinguished with ________．A.waterB.chemical agentC.foamD.powderIt can be concluded that ________．A.no officials from any authority know the accident after it happenedB.some officials ashore must have learnt the accident at very beginningC.there must be casualties even they were not mentioned in the reportD.fire is not dangerous on board vessel请帮忙给出每个问题的正确答案和分析，谢谢！
考题
A fire of escaping liquefied flammable gas is best extinguished by ______.A.cooling the gas below the ignition pointB.cutting off the supply of oxygenC.stopping the flow of gasD.interrupting the chain reaction
考题
A galley grease fire on the stove may be extinguished using______．A.waterB.foamC.the range hood extinguishing systemD.fire dampers
考题
An engine compartment gasoline fire requires which type of extinguisher?______.A.Carbon dioxideB.Dry chemicalC.FoamD.All of the above
考题
单选题A fire of escaping liquefied flammable gas is best extinguished by（）.A
cooling the gas below the ignition pointB
cutting off the supply of oxygenC
stopping the flow of gasD
interrupting the chain reaction
考题
单选题Flames from small leaks of LFG may be extinguished by（）.A
utilizing carbon dioxide or dry chemical fire extinguishersB
utilizing soda and acid fire extinguishersC
blowing the flames outD
letting it burn itself out
考题
单选题What is meant by the term overhaul in firefighting?（）A
Slow down the spread of fire by cooling adjacent structuresB
Cover the fire with foamC
Smother the fire with a blanket or similar objectD
Break up solid objects to ensure that any deep seated fires are extinguished
考题
单选题What is an advantage of using foam in fire fighting?（）A
It is effective in controlling fire in flowing oil such as coming from a broken fuel lineB
It absorbs heat from materials that could cause reignitionC
Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishmentD
Once the surface is blanketed with foam and the fire is extinguished，no further foam is required
考题
单选题A fire must be ventilated（）.A
when using an indirect attack on the fire such as flooding with waterB
to prevent the gases of combustion from surrounding the firefightersC
to minimize heat buildup in adjacent compartmentsD
if compressed gas cylinders are stowed in the compartment on fire
考题
单选题Ventilation systems connected to a compartment in which a fire is burning are normally closed to prevent the rapid spread of the fire by（）.A
convectionB
conductionC
radiationD
spontaneous combustion
考题
单选题Which of the following statements represents the correct action to take when three crew members discover a fire?（）A
One man report the fire, and the other two men fight the fireB
One man report the fire, one man fight the fire, and one man evacuate and secure the areaC
One man report the fire, one man fight the fire, and one man act as a safety observerD
All three men fight the fire and report it immediately after it is extinguished
考题
单选题An example of class "A" fire is a/an （）.A
electrical fire in the engine roomB
oil fire in the engine room bilgesC
oil fire involving a grade A petroleum productD
mattress fire in a stateroom
考题
单选题Combustible material stored in a compartment adjacent to a compartment where there is a fire may be ignitedThis ignition can occur by （）.A
heat convection through the adjacent bulkheadsB
combustion gases carried through the ventilation systemC
direct convection of the heat emitted by the adjacent fireD
heat radiated from the dock or bulkhead by the adjacent fire
考题
单选题If you must enter a room or compartment to combat the fire, keep an escape path （）.A
openB
closeC
opensD
closes
考题
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
Use the C02 system and evacuate the engine roomB
Use the fire main system and evacuate the engine roomC
Evacuate the engine room and use the C02 systemD
Evacuate the engine room and use the fire main system
考题
单选题An engine compartment gasoline fire requires which type of extinguisher?（）A
Carbon dioxideB
Dry chemicalC
FoamD
All of the above
考题
单选题Which space(s) on your cargo vessel must have a fire detection system?（）A
Any compartment containing explosivesB
Any compartment adjacent to one containing explosivesC
Enclosed spaces which are specially suitable for vehiclesD
All of the above
考题
单选题Which fire detection system is actuated by sensing a heat rise in a compartment?（）A
Manual fire detection systemB
Automatic fire detection systemC
Smoke detection systemD
Watchman's supervisory system
考题
单选题Class A fires are best extinguished by quenching or cooling with （）.A
deprival of oxygenB
a water sprayC
soda-acidD
foam
考题
单选题Oil fires are best extinguished by（）.A
cutting off the supply of oxygenB
removing the fuelC
cooling below the ignition temperatureD
spraying with water
考题
单选题Class C fires are best extinguished by （）.A
foam extinguishersB
water spray equipmentC
dry powder extinguishersD
soda-acid extinguishers
考题
单选题Oil fires are best extinguished by （）.A
cutting off the supply of oxygenB
removing the fuelC
spraying with waterD
adding oxygen
考题
单选题It is necessary to secure the forced ventilation to a compartment where there is a fire to（）.A
allow the exhaust fans to remove smokeB
extinguish the fire by carbon monoxide smotheringC
prevent additional oxygen from reaching the fireD
protect fire fighting personnel from smoke
考题
单选题A fire can be extinguished by removing （）.A
the heatB
the fuelC
the oxygenD
any of the above
考题
单选题A fire in electrical equipment should be extinguished by using（）.A
salt waterB
foamC
low-velocity fogD
CO2
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