网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Fuel oil having a low cetane rating could result in（）
A
improved cold weather starting
B
excessive fuel oil consumption
C
reduced ignition lag
D
smoother engine operation
参考答案
参考解析
解析：
暂无解析
更多 “单选题Fuel oil having a low cetane rating could result in（）A improved cold weather startingB excessive fuel oil consumptionC reduced ignition lagD smoother engine operation” 相关考题
考题
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
考题
Low compression in a diesel engine could be caused byA.worn or broken cylinder liner sealing ringsB.high cooling water temperatureC.worn or broken piston ringsD.low fuel oil pressure
考题
Which of the following represents the significance the fuel oil cetane number?A.The cetane number has no affect on injection lagB.The cetane number is an indication of the fuel's viscosityC.Ignition lag is reduced with fuels having a high cetane numberD.The cetane number is of little significance in the combustion process
考题
The cetane number of a diesel fuel oil indicates its ______.A.ignition qualityB.acid contentC.heating valueD.viscosity
考题
The cetane number of a diesel fuel oil indicates its ______.A.viscosityB.acid contentC.heating valueD.ignition quality
考题
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
考题
单选题When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?（）A
cold fuel oilB
low fuel oil pressureC
low atomizing steam pressureD
water in the fuel oil
考题
单选题Combustion knock will most likely occur as a result of using a fuel with（）A
low ignition qualityB
a high volatilityC
low ignition delayD
a high cetane number
考题
单选题If a fire ignites in the engine room as a result of a high pressure fuel oil leak, you should FIRST （）.A
secure the ventilationB
find a soda acid extinguisherC
shut off the fuel oil supplyD
secure the generator
考题
单选题Fuel oil contamination of an auxiliary diesel engine lube oil can result in（）A
an increased flash pointB
higher lube oil pressuresC
an increased viscosityD
lower lube oil pressures
考题
单选题A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）A
low lube oil temperatureB
low starting air temperatureC
air bubbles in the fuel oil systemD
water in the starting air system
考题
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 viscosityB
low fuel oil temperatureC
high lube oil viscosityD
energized glow plugs
考题
单选题Low compression in a diesel engine could be caused by（）A
worn or broken cylinder liner sealing ringsB
high cooling water temperatureC
worn or broken piston ringsD
low fuel oil pressure
考题
单选题Which of the following statements is true concerning the cetane number of diesel fuel?（）A
The cetane number affects the amount of injection lagB
The cetane number is an indication of the fuels viscosityC
Ignition lag is reduced with fuels having a high cetane numberD
The cetane number is of little significance in the combustion process
考题
单选题Which of the following statements is true concerning the cetane number rating of diesel fuel? （）A
The cetane number is obtained by comparing the fuel with cetane a colorless liquid hydrocarbonB
The higher the cetane number, the shorter the ignition lagC
The highest cetane number of fuel is 100D
All of the above
考题
单选题The cetane number of a diesel fuel oil indicates its（）A
ViscosityB
acid contentC
heating valueD
ignition quality
考题
单选题Crankcase explosions in propulsion diesel result from（）A
the splashing of lubrication oil by the crankshaftB
the dilution of crankcase oil with particles of combustionC
broken fuel lines spraying oil on the crankcaseD
the ignition of unburned fuel and air in the crankcase
考题
单选题Operating a diesel engine under light loads and at low temperatures for an exhaust for an extended period can result in（）A
formation of carbon on the intake and exhaust portsB
high water jacket temperaturesC
overheated pistons and cylindersD
an increase in lube oil viscosity due to fuel dilution
考题
单选题Injection lag in a diesel engine may be caused by（）A
a higher cetane number of fuel oilB
the diesel fuel used having a high viscosityC
mechanical rigidity in the lube pump mechanismD
a decrease rigidity in the fuel pump delivery pressure
考题
单选题A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a （）A
low TBN valueB
high alkaline reserveC
low flash pointD
high pour point
考题
单选题Ignition failure in an automatically controlled auxiliary boiler could be caused by（）A
carbon deposits on the flame scannerB
high fuel oil temperatureC
low fuel oil viscosityD
high steam pressure
考题
单选题One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an （）A
decrease in ignition lagB
increase in fuel economyC
reduction in lube oil viscosityD
increase in cylinder misfiring
考题
单选题The longer the ignition delay period resulting from improper use of low cetane fuel, the （）A
less fuel will enter the cylinderB
higher the cylinder combustion temperatureC
more complete the fuel combustionD
more rapid the rise in combustion pressure
考题
单选题Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, could result in （）A
increased fuel consumptionB
increased feed water consumptionC
fuel pump failureD
combustion control system failure
考题
单选题Surface irregularities, such as erosion and pitting on injection pump plungers, will（）A
increase ignition delayB
affect fuel oil meteringC
affect engine performance at low speedD
only disappear due to fuel oil abrasion
考题
单选题Which of the following represents the significance the fuel oil cetane number?（）A
The cetane number has no affect on injection lagB
The cetane number is an indication of the fuel’s viscosityC
Ignition lag is reduced with fuels having a high cetane numberD
The cetane number is of little significance in the combustion
考题
单选题The cetane rating of diesel fuel is an indication of the （）A
ignition quality of the fuelB
calorific value of the fuelC
flash point of the fuelD
rate of fuel consumption
热门标签
最新试卷
