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
During extremely cold weather, while starting an engine, it turns too slowly and fails to startThis problem is most likely the result of （）
A
high fuel oil viscosity
B
low fuel oil temperature
C
high lube oil viscosity
D
energized glow plugs
参考解析
解析：
暂无解析
相关考题：
AWeather has a great influence(影响) on people．It influences people's health, intelligence (智力) and feelings．In August, it is very hot and wet in the southern part of the United States．People there have heart disease and other kinds of health problems during this month． In the Northeast and Middle West, it is very hot at some times and very cold at other times．People in these places may have heart disease after the weather changes in February or March．The weather can also influence intelligence． For example, in a 1982 study by scientists, the in scores of a group of students were very high during a storm, but after the storm their IQ scores were lower than usual level． So storms can increase intelligence．However, very hot weather can lower it． Students in the United States often do badly on exams in the hot months of the year．Weather also has a strong influence on people's feelings．Winter may be a bad time for thin people．They usually feel cold during these months and they may feel unhappy during cold weather． In hot summer weather, on the other hand, fat people may feel unhappy． The sum- mer heat may make them tired and they are easy to get angry．( )21．lf thin people feel unhappy, the weather may be very _________．A．warmB． coldC． coolD． hot
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
While sailing in ballast under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine isA.the exhaust temperatureB.the speed of main engineC.the turbine rotation speedD.the power of main engine
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
If a diesel engine turned over freely but failed to start, the cause could be ________.A.water in the fuelB.cold lube oilC.excessive starting air pressureD.excessive fuel pressure
单选题Being extremely _____ to cold, I don’t like to live in very cold places.AsensitiveBsensibleCsenselessDsensational
单选题The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）Athe same, whether at sea, or during maneuveringBadjusted during each hour of operation while at constant RPMChigher at sea than while maneuveringDlower at sea than while maneuvering
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 the inspection, the starting air valves should be closed （） the engine from turning.Ato increaseBto speed upCto preventDto reduce
单选题The knock occurring when a cold diesel engine is started and continues while running at low speed, but stops when the engine reaches normal operating speed and temperature, is（）.Acaused by retarded injection timingBcaused by a mechanical defect in one cylinderCcaused by high fuel injection pressuresDnormal for these conditions
单选题Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an（）Aincrease in starting air pressureBincrease in lube oil viscosityCcompression expansion deviceDjacket water heater
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When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）Aintake strokeBcompression strokeCpower strokeDexhaust 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Regarding a Diesel engine crankcase, the general arrangement and installation should preclude the possibility of （）Afree entry of air to the crankcaseBwater entering the crankcase while engine wash-downs are being performedCexcessive oil leakage during periods of increased blow-byDsub-cooling internal components
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What function is provided by the crankcase ventilation system on some diesel engines?（）AIncreases the sludge forming tendency of lube oilBPrevents the accumulation of combustible gasesCImproves lube oil coolingDImproves cold weather starting
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During maneuvering operations for a direct reversing large, low-speed, main propulsion diesel engine, which of the following actions is used to stop the shaft from turning prior to reversing the engine rotation?（）AFlywheel inertiaBAdmission of starting airCThe way of the vesselDsecuring of fuel to the cylinders
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During （）, the starting air valves should be closed to prevent the engine from turning.AoverhaulBrunningCblowing downDAll of the above are correct
单选题A diesel engine cranks properly during starting but immediately stallsWhich of the following systems is most likely at fault?（）AHydraulic startingBElectric startingCIgnitionDFuel
单选题The blower type crankcase ventilation system （）Aremoves combustible gases in the crankcaseBprevents the formation of combustible gases in the crankcaseCcools lubricating oilDimproves cold weather starting
单选题While sailing under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine is （）Apower of main engineBturbine rotation speedCspeed of main engineDexhaust temperature
单选题An electric heater built into some smaller diesel engines is used to （）.Araise lube oil viscosity for easier starting in cold weatherBincrease air inlet temperatureCincrease compression ratioDincrease jacket water temperature for easier starting in cold weather
单选题“In times of heavy weather, it is extremely dangerous if manning is very short” This sentence means （）.AIn times of heavy weather, it is extremely dangerous if a seaman is not enough tallBIn times of heavy weather, it is extremely dangerous if a crew is very shortCIn case of bad weather, it is particularly dangerous if there is a shortage in personnelDIn case of bad weather, it is particularly dangerous if there are enough personnel
单选题If your propeller is racing in rough weather，you should（）.Adecrease your engine speedBignore itCincrease your engine speedDstop your engine until the rough weather passes