199 During extremely cold weather, while starting an engine,it turns too slowly and fails to start.This problem is most likely theresult of() A.high fuel oil viscosityB.low fuel oil temperatureC.high lube oil viscosityD.energized alow plugs
199 During extremely cold weather, while starting an engine,it turns too slowly and fails to start.This problem is most likely theresult of()
A.high fuel oil viscosity
B.low fuel oil temperature
C.high lube oil viscosity
D.energized alow plugs
相关考题：
The desirable properties of a marine fuel oil should include .A.high flash point and high viscosityB.low flash point and high viscosityC.low heating value and high sulphur contentD.high heating value and low sulphur content
If the engine does not start on air, it may be due toA.low compression of the fuel pumpsB.incorrect timing of fuel pumpsC.the starting air valves stuckD.air-locks in fuel oil pipeline
Cold weather starting of a diesel engine is more difficult than warm weather starting due toA.use of low viscosity oil in cold weatherB.increased moisture content of inlet air in cold weatherC.increased drag of pistons and bearings due to increased oil viscosityD.higher compression pressures reached due to smaller clearances existing in the engine during cold weather
Persistent knocking in one cylinder of an eight cylinder diesel engine would MOST likely be caused by______.A.using fuel oil with low cetane numberB.a badly worn piston pinC.a loose flywheel keyD.a loose bed plate bolt
Fuel has been injected but ignition fails. The possible cause may be ______.A.slightly leaky exhaust valveB.increased scavenging air temperatureC.engine cylinders not scavenged sufficientlyD.too much water in the fuel oil
单选题Clogged diesel engine fuel oil filters can cause（）Aloss of powerBmisfiringClow fuel oil pressureDAll of the above
单选题Engine fuel pump index is （）.Athe viscosity indexBthe fuel oil contentsCthe starting speedDthe reading at the rack
单选题Fuel pump index is （）.Athe viscosity indexBthe fuel oil contentsCthe starting speedDthe reading at the rack
单选题A diesel engine is turned at normal cranking speed, but fails to fireThis can occur from （）Alow lube oil temperatureBlow starting air temperatureCair in the fuel injectionDwater in the starting air system
单选题When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.Afilter to remove the fuel oilBuse the settler to remove the fuel oilCremove the fuel oil by centrifugingDdrain and then renew the lube oil supply
单选题Before starting a diesel engine, you should always（）Acheck the pyrometer readingsBcheck the crankcase oil levelCcheck the fuel oil strainersDclean the fuel system
单选题If the engine does not start on air, it may be due to （）Alow compression of the fuel pumpsBincorrect timing of fuel pumpsCthe starting air valves stuckDair-locks in fuel oil pipeline
单选题Fuel oil begins injection into the cylinder of a four-stroke/cycle diesel engine during the （）.Aintake strokeBexhaust strokeCpower strokeDcompression stroke
单选题Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）Aincreasing the quantity of starting airBincreasing the lube oil pressureCheating the engine fuel supplyDheating the engine coolant
单选题Cold weather starting of a diesel engine may be made easier by（）Adecreasing the compression ratioBusing a special fuel having a high ignition temperatureCincreasing the starting air supplyDheating the jacket water
单选题Cold weather starting of a diesel engine is more difficult than warm weather starting due to（）Ause of low viscosity oil in cold weatherBincreased moisture content of inlet air in cold weatherCincreased drag of pistons and bearings due to increased oil viscosityDhigher compression pressures reached due to smaller clearances existing in the engine during cold weather
单选题The ignition quality of a fuel oil is an important operational consideration because it（）Aindicates the amount of abrasive material in the fuelBaffects the starting ability of a cold engineCdetermines the amount of fuel penetration engineDaffects the compression ratio of an operating engine
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Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the （）Aelectronic ignition systemBcompression of air by the pistonCfriction in the fuel injectorDfuel oil bearing system
单选题Which of the following machinery space operations is required to be logged in the Oil Record Book?（）ABallasting or cleaning of fuel oil tanksBShifting suction of main fuel pump to reserve fuel oil tankCChanging out sprayer plates to adjust for steam demandDDaily inspection of engine room bilges
单选题When preparing a ship for heavy weather，fuel oil day tanks should be（）.Apumped overboard to calm the seasBdrained to the lower hull to reduce free surfacesCfilled to ensure that sufficient fuel oil is available during a lengthy emergencyDpartially drained to increase free surfaces in order to reduce motions
单选题Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by （）Aincreasing the quantity of starting airBincreasing the lube oil pressureCheating the engine fuel supplyDheating the engine jacket water
单选题During extremely cold weather, while starting an engine, it turns too slowly and fails to startThis problem is most likely the result of （）Ahigh fuel oil viscosityBlow fuel oil temperatureChigh lube oil viscosityDenergized glow plugs
单选题A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）Alow lube oil temperatureBlow starting air temperatureCair bubbles in the fuel oil systemDwater in the starting air system
单选题Fuel oil having a low cetane rating could result in（）Aimproved cold weather startingBexcessive fuel oil consumptionCreduced ignition lagDsmoother engine operation
单选题A viscosity regulator used for an engine is usually provided in order to （） for an engine burning heavy fuel oil.Aregulate the fuel supplyBmaintain a constant fuel viscosity at the fuel valvesCmaintain efficient coolingDalter the fuel density
单选题If a diesel engine fails to start，one of the likely causes is （）Alow compression temperatureBlow ambient air pressureChigh lube oil pump pressureDhigh fuel oil booster pump pressure