To prevent the spread of fire by conduction, you should ______.A.cool the bulkheads around the fireB.remove combustibles from direct exposureC.close all openings to the areaD.shut off all electric power

To prevent the spread of fire by conduction, you should ______.

A.cool the bulkheads around the fire

B.remove combustibles from direct exposure

C.close all openings to the area

D.shut off all electric power


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I suggest we should cancel the performance immediately to________ .A.prevent fire from occurringB.avoid a trampleC.keep people awayD.stop the traffic flow

In the event of fire in a machinery space,______.A.the fixed carbon dioxide system should be used only when all other means of extinguishment have failedB.the fixed carbon dioxide system should be used immediately,as it is the most efficient means of extinguishmentC.water in any form should not be used as it will spread the fireD.the space should be opened 5 minutes after flooding CO2 to prevent injury to personnel

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A fire starts on your vessel while refueling. You should FIRST ______.A.stop the ventilationB.sound the general alarmC.determine the source of the fireD.attempt to extinguish the fire

Fire may be spread by which means?A.Conduction of heat to adjacent surfacesB.Direct radiationC.ConvectionD.All of the above

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单选题In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by ().AconvectionBconductionCradiationDventilation

单选题If there’s a fire aboard your vessel, you should first().Anotify the competent authoritiesBsound the alarmChave passengers put on life preserversDcut off air supply to the fire

单选题Which firefighting method is an example of an indirect attack on a fire?().ABouncing a straight stream of water off the overhead to create spray effectBSpraying foam on a bulkhead and letting it flow down and over a pool of burning oilCFlooding a paint locker with CO2 and sealing the compartmentDCooling adjacent bulkheads with water to prevent the spread of the fire by conduction

单选题Before attempting to put out a class “C” fire involving an electric-driven centrifugal pump, you should FIRST ().Ainsulate your shoesBground the fire hoseCsecure its power supplyDstart the fire pump

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To extinguish an electrical fire, you should use ().Amechanical foamBchemical foamCcarbon dioxideDsoda acid

单选题A fire starts on your vessel while refueling. You should FIRST().Astop the ventilationBsound the general alarmCdetermine the source of the fireDattempt to extinguish the fire

单选题Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this,you should().Ainstall shoring so the shoring supports the damaged bulkheads without pushing on themBinstall shoring so that it pushes on the damaged bulkhead while supporting itCuse jacks or chain falls to remove the set before installing shoresDplace sandbags by the bulkhead without installing shores

单选题If a fire occurs in the boiler room as a result of a leaking fuel line, you should FIRST ().Anotify the engineer on watchBisolate and secure the pipingCthrow sand on the fireDextinguish the fire using a combination nozzle with applicator

单选题A fire starts on you vessel while refueling. You should first().Astop the ventilationBsound the general alarmCdetermine the source of the fireDattempt to extinguish the fire

单选题When fighting an electrical fire, you should first ().Astop ventilation to the areaBstop the vesselCsecure electricity to the circuitDapply CO2 to the fire

单选题To prevent the spread of fire by convection you should ().Aremove combustibiles from direct exposureBcool the bulkhead around the fireCclose all openings to the areaDshut off electrical power

单选题To prevent the spread of fire by conduction you should().Acool the bulkheads around the fireBremove combustibles from direct exposureCclose all openings to the areaDshut off all electric power

单选题Fire dampers prevent the spread of fire by().AconvectionBconductionCradiationDdirect contact

单选题In order to benefit from the use of storm oil in heavy seas,the storm oil should be spread ().Aaround the rudder and screwsBcompletely around the vesselCto leeward of the vesselDto windward of the vessel

单选题When possible,what should be the FIRST step in combating a fire on deck resulting from a cargo overflow or a leaking cargo line?()ABlanket the cargo spill with foamBPrevent the spread of fire with a foam damCApply CO2 on burning fuel at its sourceDShut off the transfer of cargo