单选题If not attached to the nozzle,each low-velocity spray applicator on a vessel must be stowed（）.Ain a protected area on the main deckBinside a machinery space near the entranceCnext to the fire hydrant to which the fire hose is attachedDon a rack inside the quarters near the entrance
单选题
If not attached to the nozzle,each low-velocity spray applicator on a vessel must be stowed（）.
A
in a protected area on the main deck
B
inside a machinery space near the entrance
C
next to the fire hydrant to which the fire hose is attached
D
on a rack inside the quarters near the entrance
参考解析
解析：
暂无解析
相关考题：
Proctors asked each student to _________ an ID card with an attached photo. A. produceB. intimateC. productD. pronounce
One advantage of the all-purpose nozzle is that it ______.A.can fit any size hoseB.converts a stream of water into a fogC.increases the amount of water reaching the fireD.can spray two streams of water at the same time
The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to ______.A.a difference in water pressureB.the method of breaking up the water streamC.the length of the applicatorD.All of the above
A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the ______．A.Fire hose might be damaged by cargo operationsB.Vessel is in portC.Fire-main system is not chargedD.Fire pumps are used for purposes other than supplying water to the fire main
If a firefighting situation calls for low-velocity fog you would ______．A.order the engine room to reduce pressure on the fire pumpB.put the lever on an all-purpose fire nozzle all the way forwardC.attach a low-velocity fog applicator with the nozzle shut downD.put the lever on an all-purpose fire nozzle all the way back
The high-velocity fog tip used with the all-purpose fire fighting nozzle should always be ______．A.Attached by a chainB.Coated with heavy grease to prevent corrosionC.Painted red for identity as emergency equipmentD.Stored in the clip at each fire station
A Kort nozzle is a(n) ______.A.hollow tube surrounding the propeller used to improve thrustB.nozzle attached to a firefighting hoseC.intake valve on a diesel engineD.piston cylinder on a diesel engine
If not attached to the nozzle, each low-velocity spray applicator on a vessel must be stowed__________.A.in a protected area on the main deckB.inside a machinery space near the entranceC.next to the fire hydrant to which the fire hose is attachedD.on a rack inside the quarters near the entrance
A technician receives a dot matrix printer for repair and the work order states that the printer is only printing one-half of each character. Which of the following should the technician replace？（）A、print headB、fuserC、injectorD、print nozzle
单选题If a firefighting situation calls for low-velocity fog you would（）.Aorder the engine room to reduce pressure on the fire pumpBput the lever on an all-purpose fire nozzle all the way forwardCattach a low-velocity fog applicator with the nozzle shut downDput the lever on an all-purpose fire nozzle all the way back
单选题In a jerk pump, the amount of fuel that will be forced through the spray nozzle on each upward stroke of the plunger depends on （）Athe pump supply pressureBthe slope of the fuel camChow the plunger is rotatedDthe number of sleeve segments engaged with the rack
单选题One advantage of the all-purpose nozzle is that it（）.Acan fit any size hoseBconverts a stream of water into a fogCincreases the amount of water reaching the fireDcan spray two streams of water at the same time
单选题The all-purpose nozzle will produce a fog spray when you（）.Apull the nozzle handle all the way back toward the operatorBpull the nozzle handle back to a position where the handle is perpendicular to the plane of the nozzleCpush the nozzle handle forward as far as it will goDinsert a fog applicator between the fire hose and nozzle
单选题High-velocity fog（）.Ais a finer，more diffuse water spray than low-velocity fogBrequires that the water pressure be no greater than 60 psiCproduces an effective fog pattern no more than 6 feet beyond the nozzleDextinguishes a fire by absorbing heat and reducing the supply of oxygen
单选题In a unit injector the amount of fuel that will be forced through the spray nozzle on each stroke of the plunger depends on （）Athe pump supply pressureBthe slope of the fuel camChow the plunger is rotatedDthe number of sleeve segments engaged with the rack
单选题The efficiency of a flash type evaporator can be increased by（）Alowering brine discharge densityBdecreasing the absolute pressure of each stageCincreasing the saltwater feed heater temperatureDincreasing the pressure at the spray pipe
单选题The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to（）.Aa difference in water pressureBthe method of breaking up the water streamCthe length of the applicatorDAll of the above
单选题The spray of water in low-velocity fog will have（）.Agreater range than high-velocity fogBlesser range than high-velocity fogCabout the same range as high-velocity fogDgreater range than a solid stream
单选题A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the（）.Afire hose might be damaged by cargo operationsBvessel is in portCfire-main system is not chargedDfire pumps are used for purposes other than supplying water to the fire main
单选题Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?（）AThe amount of fuel injected will be increasedBThe start of injection will be retardedCThe nozzle will permit fuel to dribbleDThe spray pattern will be distorted
单选题Distortion of the spray pattern of a nozzle or injector may be indicated by a/an（）Ahigh firing pressureBoverload of that particular cylinderCsmoky exhaustDcooling water temperature rise
单选题Faulty operation of diesel engine fuel injection nozzles can be a direct cause of（）.Aexcessive fuel nozzle holder coolingBsediment in the fuel supplyCdistortion of the fuel spray patternDimproper atomization of the fuel
单选题Faulty operation of diesel engine fuel injection nozzles can be directly caused by （）.Awater in the fuel oil supplyBexcessive fuel nozzle holder coolingCa distorted fuel spray patternDleakage past the plunger into the oil drain
单选题Which of the fuel injection systems listed uses a spring loaded differential spray needle valve and individual pump for each cylinder?（）ACommon-rail injectionBAir injectionCJerk pump injectionDDistribution injection
单选题A Kort nozzle is a(n)（）.Ahollow tube surrounding the propeller used to improve thrustBnozzle attached to a firefighting hoseCintake valve on a diesel engineDpiston cylinder on a diesel engine
单选题A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.Aa low velocity spray applicatorBa water spray or solid streamCat least two spray patterns of waterDat least 25 psi delivered pressure
单选题The 12-foot low-velocity fog applicator（）.Ahas a spray pattern 12 feet in diameterBcan be used in conjunction with both 1-1/2 inch and 2-1/2 inch all-purpose nozzlesChas a 90°bend at its discharge endDhas a screw thread end which connects to the all-purpose nozzle