单选题Valve gear knocks are more easily located while the engine （）.Ais runningBstopsCis repairedDlacks of oil
单选题
Valve gear knocks are more easily located while the engine （）.
A
is running
B
stops
C
is repaired
D
lacks of oil
参考解析
解析：
暂无解析
相关考题：
The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?A.The profile of the valve is like a globeB.The valve seat is set into the bulbous bodyC.The plug or disc of the valve is made vertical to the axis of the pipeD.The valve seat is located at right side of the plug or disc
If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will .A.have a larger than normal dead bandB.produce excessive speed response to a load changeC.respond slowly to any change in engine loadD.stabilize engine speed at the new governor setting
If the engine does start on air, but combustion does not immediately begin, the cause may be _____.A.failure of the fuel pumpsB.starting air pressure too lowC.stop valve in air line closedD.the turning gear still engaged
What is a requirement for remote manual shutdown stations for internal combustion engine driven cargo pumps on tank barges ________．A.They must be conspicuously markedB.They must be located at least 10 feet from the engineC.There must be at least two such shutdown devicesD.The valve rods shall be fitted with stuffing boxes
单选题If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will （）Ahave a larger than normal dead bandBproduce excessive speed response to a load changeCrespond slowly to any change in engine loadDstabilize engine speed at the new governor setting
单选题White smoke issuing from the exhaust of an auxiliary diesel engine valve opening （）Athe engine is overloadedBthe engine is coldCthere is too much lube oil in the cylindersDthe turbocharger is fouled
单选题In the management of the shafting, because（） carry heavy load and caused high temperature easily, it should be paid attention.Athe bearing near to the diesel engineBthe intermediate bearing near to the thrust bearingCthe intermediate bearing near to the sterntubeDthe bearing located at the middle of the diesel engine and the sterntube
单选题The scale trap is located between the （）Aking valve and the expansion valveBsolenoid valve and expansion valveCevaporator and receiverDcompressor and evaporator
单选题If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an （）Aexcessively late injection timing for each cylinderBincorrectly adjusted intake valve timingCincorrectly adjusted fuel injectorDincorrectly adjusted intake valve clearance
单选题Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to（）.Abe fitted with a positive fuel shut-off valve located at the tankBhave a shut-off valve at the top of the tankChave a gate valve easily accessible in the space where the tank is locatedDhave a drain cock at the lowest point in the fuel line
单选题Before starting an engine by air, the engine must（）Abe turned by a turning gear for at least one minuteBbe turned by a turning gear for at least two minutesCbe turned at least one complete turnDbe turned at least two complete turns
单选题Excessively worn, or polished ends on a diesel engine valve spring, indicate（）Aburned exhaust valvesBexcessive spring compressionCspring surgeDworn valve seats
单选题Worn diesel engine intake valve guides can result in （）Aincreased engine breathing efficiencyBexcessive valve lashCexcessive lube oil consumptionDlower than normal fuel consumption
单选题Diesel engine air start valve timing is controlled by（）Aengine operating speedBan air manifoldCa hydraulic distributorDindividual cams and valve gear
单选题The alarm signal for engine room catching fire is a blast of random bell follow by （）Atwo knockBthree knocksCfour knocksDfive knocks
单选题Proper lubrication of the main bearing is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because （）Abearing pressure in a four-stroke/cycle acting single diesel engine is continually reversedBbearing pressure in a two-stroke/cycle single acting diesel engine is continually reversedCthe maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engineDtwo-stoke/cycle diesel engines require more complicated lubrication piping
单选题After the engine is warned, we should（） the turning gear before starting up the engine.Atake inBput inCtake outDput up
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Broken intake valve springs on one cylinder of a diesel engine can cause the engine to （）AOver speedBfire improperlyClose oil pressureDoverheatrapidly
单选题（） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.AThe driven gearBThe driveCThe greaseDThe lubricating oil
单选题If the engine does start on air, but combustion does not immediately begin, the cause may be （）.Afailure of the fuel pumpsBstarting air pressure too lowCstop valve in air line closedDthe turning gear still engaged
单选题While loading bunkers, you notice oil on the water near the vesselWhat should you do first?（）AStop loadingBNotify the harbour administrationCDetermine if the vessel is the source of the pollutionDStart the main engine and put them in gear to disperse the spill
单选题A loud clicking noise from the valve compartment of an operating diesel engine would indicate（）Aworn valve seatsBworn main bearingCexcessive valve clearanceDweak rocker arm springs
单选题（）uses one or two high pressure pumps for all the cylinders with one more standby, while（）have a separate high-pressure pump for each cylinder.AA common rail engine；conventional enginesBA conventional engine；common rail enginesCA marine diesel engine；most other enginesDA two-stroke engine；four-stroke engines
单选题The relief valve is located on the（）Adischarge side of condenserBdischarge side of compressorCoutlet of the evaporatorDreceiver tank
单选题An interlock in the remote operating valve line stops the valve （） when the engine turning gear is engaged.Ato openBopeningCopenDopened
单选题The timing of diesel engine air starting valves is controlled by（）Athe air start valve timing gears and rodsBa cylinder check valveCindividual cams and valve gearDan air manifold poppet valve