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
After extinguishing a fire with CO2, it is advisable to ______.
A.use all CO2 available to cool the surrounding area
B.stand by with water or other agents
C.thoroughly ventilate the space of CO2
D.jettison all burning materials
相关考题：
One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space isA.the 'snow' which is sometimes discharged along with the gas is toxicB.prolonged exposure to high concentrations of CO2 gas causes suffocationC.rapid dissipation of the CO2 vaporD.the CO2 gas is lighter than air and a large amount is required to extinguish a fire near the deck
In fighting a fire in a fuel tank, the FIRST action you should attempt is to _____.A.secure all sources of fresh air to the tankB.begin transferring the fuel to other tanksC.top off the tank to force out all vaporsD.station someone at the fixed CO2 release controls
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
Which of the following statements is FALSE，concerning the regulations pertaining to the cylinder room of a fixed CO2 fire extinguishing system ________．A.The compartment must be properly ventilatedB.The temperature of the room should never exceed 130℉C.The door must be kept unlockedD.The compartment shall be clearly marked and identifiable
Fire protection regulations for towing vessels require all crew members to know how to perform each of these tasks EXCEPT ______．A.Start the mechanical ventilation system for the engine roomB.Operate the fuel shut-off for the engine roomC.Operate all fire extinguishing equipment aboard the vessel on board the vessel，including starting the fire pumpD.All of the above
Before using a fixed CO2 system to fight an engine room fire, you must ______.A.secure the engine room ventilationB.secure the machinery in the engine roomC.evacuate all engine room personnelD.All of the above
Close all fire doors and use the （）（干粉灭火器）.A、dry powder extinguisherB、foam extinguisherC、CO2 extinguisherD、portable extinguisher
CO2 and Halon extinguishers are used for electrical fire, as well as （）fire.A、commonB、oilC、electricalD、chemical
单选题Before using a fixed CO2 system to fight an engine room fire，you must（）.Asecure the engine room ventilationBsecure the machinery in the engine roomCevacuate all engine room personnelDAll of the above
单选题There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.Athe lack of cooling effect on heated materialsBthat it cannot be used in a dead ship situation with no electrical power to the CO2 pumpCthat it breaks down under extreme heat to form poisonous gasesDthere is no effect on a class A fire even in an enclosed space
单选题Fire protection regulations for towing vessels require all crew members to know how to perform each of these tasks EXCEPT（）.Astart the mechanical ventilation system for the engine roomBoperate the fuel shut-off for the engine roomCoperate all fire extinguishing equipment aboard the vessel on board the vessel，including starting the fire pumpDAll of the above
单选题A fire in the galley always poses the additional threat of（）.Acontaminating food with extinguishing agentBshutting all sources of air into the compartmentCclosing the sea chestDa grease fire in the ventilation system
单选题Fire protection regulations for towing vessels require training in all of the following，EXCEPT（）.Aputting on a fireman's outfit，if the vessel is so equippedBdonning a self-contained breathing apparatus，if the vessel is so equippedCactivating the general alarm and reporting inoperative alarm systems and fire-detection systemsDrefilling and servicing all expended fire extinguishing equipment
单选题Which of the actions listed should be taken FIRST to control an oil fire in a fuel oil tank?（）ACommence draining that tank as quickly as possibleBSeal off all vents to that tankCActivate the CO2 system to that tankDShut off the steam heating coils
单选题If a CO2 fire extinguisher is not readily available, which of the listed fire extinguishers would be best suited to combat a small electrical fire in a switchboard?（）ADry chemicalBHalonCLow velocity fogDSteam
单选题The FIRST course of action in fighting a fire in a cargo or fuel oil tank is to （）.Asecure all openings to the tankBdischarge an initial charge of CO2 with a hand portable extinguisherCdirect a fire hose into the tank and energize the fire mainDspray the tank boundaries with a fire hose to promote cooling
单选题In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must（）.Aactuate an alarm and open the engine room control valveBactuate an alarm and open the engine room CO2 releasing valveCopen the engine room control valve and shut off engine room ventilation fansDopen the engine room control valve and then the CO2 releasing valve
单选题Multiple fire pumps may be used for other purposes provided that one pump is（）.Aon line to the fire mainBkept available for use on the fire main at all timesCcapable of being connected to the fire mainDrated at or above 125 psi
单选题关闭所有防火门并使用干粉灭火器。（）AClose all fire doors and use the dry powder extinguisher.BClose all fire doors and use the foam extinguisher.CClose all fire doors and use the CO2 extinguisher.DClose all fire rooms and use the dry powder extinguisher.
单选题The fire extinguishing action of CO2 comes mostly from （）.Abreaking the fire chemical chain reactionBsmotheringCcoolingDisolating the heat from the fuel
单选题If a small fire initially breaks out in the engine room bilges, in which of the following sequences should the fire extinguishing agents or systems be used?（）AFixed CO2,semi-portable CO2, then hand portable CO2BSemi-portable CO2, fixedCO2, then hand portable CO2CHand portable, semi-portable CO2, then as a last resort the fixed CO2 systemDHand portable, fixed CO2, then as a last resort the semi-portable CO2
单选题In fighting a fire in a fuel tank, the FIRST action you should attempt is to （）.Asecure all sources of fresh air to the tankBbegin transferring the fuel to other tanksCtop off the tank to force out all vaporsDstation someone at the fixed CO2 release controls
单选题After extinguishing a paint locker fire using the fixed CO2 system，the next action is to have the space（）.Aopened and burned material removedBleft closed with vents off until all boundaries are coolCchecked for oxygen contentDdoused with water to prevent reflash
单选题Your vessel is equipped with a fixed CO2 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 CO2 system and evacuate the engine roomBUse the fire main system and evacuate the engine roomCEvacuate the engine room and use the CO2 systemDEvacuate the engine room and use the fire main system
单选题After extinguishing a fire with CO2，it is advisable to（）.Ause all CO2 available to cool the surrounding areaBstand by with water or other agentsCthoroughly ventilate the space of CO2Djettison all burning materials
单选题After extinguishing a fire with C02,it is availabe to（）.Ause all CO2 available to cool the surronding areaBstand by with water or other agentsCthoroughly ventilate the space of CO2Djettison all buring materials