单选题Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.Acompletely closing the compartmentBclosing the compartment except for the ventilatorsCleaving the compartment open to the airDincreasing the air flow to the compartment by blowers
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
参考解析
解析：
暂无解析
相关考题：
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
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！
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
A galley grease fire on the stove may be extinguished using______．A.waterB.foamC.the range hood extinguishing systemD.fire dampers
An engine compartment gasoline fire requires which type of extinguisher?______.A.Carbon dioxideB.Dry chemicalC.FoamD.All of the above
单选题A fire of escaping liquefied flammable gas is best extinguished by（）.Acooling the gas below the ignition pointBcutting off the supply of oxygenCstopping the flow of gasDinterrupting the chain reaction
单选题Flames from small leaks of LFG may be extinguished by（）.Autilizing carbon dioxide or dry chemical fire extinguishersButilizing soda and acid fire extinguishersCblowing the flames outDletting it burn itself out
单选题What is meant by the term overhaul in firefighting?（）ASlow down the spread of fire by cooling adjacent structuresBCover the fire with foamCSmother the fire with a blanket or similar objectDBreak up solid objects to ensure that any deep seated fires are extinguished
单选题What is an advantage of using foam in fire fighting?（）AIt is effective in controlling fire in flowing oil such as coming from a broken fuel lineBIt absorbs heat from materials that could cause reignitionCMost foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishmentDOnce the surface is blanketed with foam and the fire is extinguished，no further foam is required
单选题A fire must be ventilated（）.Awhen using an indirect attack on the fire such as flooding with waterBto prevent the gases of combustion from surrounding the firefightersCto minimize heat buildup in adjacent compartmentsDif compressed gas cylinders are stowed in the compartment on fire
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（）.AconvectionBconductionCradiationDspontaneous combustion
单选题Which of the following statements represents the correct action to take when three crew members discover a fire?（）AOne man report the fire, and the other two men fight the fireBOne man report the fire, one man fight the fire, and one man evacuate and secure the areaCOne man report the fire, one man fight the fire, and one man act as a safety observerDAll three men fight the fire and report it immediately after it is extinguished
单选题An example of class "A" fire is a/an （）.Aelectrical fire in the engine roomBoil fire in the engine room bilgesCoil fire involving a grade A petroleum productDmattress fire in a stateroom
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 （）.Aheat convection through the adjacent bulkheadsBcombustion gases carried through the ventilation systemCdirect convection of the heat emitted by the adjacent fireDheat radiated from the dock or bulkhead by the adjacent fire
单选题If you must enter a room or compartment to combat the fire, keep an escape path （）.AopenBcloseCopensDcloses
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?（）.AUse the C02 system and evacuate the engine roomBUse the fire main system and evacuate the engine roomCEvacuate the engine room and use the C02 systemDEvacuate the engine room and use the fire main system
单选题An engine compartment gasoline fire requires which type of extinguisher?（）ACarbon dioxideBDry chemicalCFoamDAll of the above
单选题Which space(s) on your cargo vessel must have a fire detection system?（）AAny compartment containing explosivesBAny compartment adjacent to one containing explosivesCEnclosed spaces which are specially suitable for vehiclesDAll of the above
单选题Which fire detection system is actuated by sensing a heat rise in a compartment?（）AManual fire detection systemBAutomatic fire detection systemCSmoke detection systemDWatchman's supervisory system
单选题Class A fires are best extinguished by quenching or cooling with （）.Adeprival of oxygenBa water sprayCsoda-acidDfoam
单选题Oil fires are best extinguished by（）.Acutting off the supply of oxygenBremoving the fuelCcooling below the ignition temperatureDspraying with water
单选题Class C fires are best extinguished by （）.Afoam extinguishersBwater spray equipmentCdry powder extinguishersDsoda-acid extinguishers
单选题Oil fires are best extinguished by （）.Acutting off the supply of oxygenBremoving the fuelCspraying with waterDadding oxygen
单选题It is necessary to secure the forced ventilation to a compartment where there is a fire to（）.Aallow the exhaust fans to remove smokeBextinguish the fire by carbon monoxide smotheringCprevent additional oxygen from reaching the fireDprotect fire fighting personnel from smoke
单选题A fire in electrical equipment should be extinguished by using（）.Asalt waterBfoamClow-velocity fogDCO2