When the fuel oil is burning in the combustion chamber, it _____.A.gives up large amount of heatB.gives off large amount of heatC.gives up large amount of steamD.gives off large amount of steam
When the fuel oil is burning in the combustion chamber, it _____.
A.gives up large amount of heat
B.gives off large amount of heat
C.gives up large amount of steam
D.gives off large amount of steam
相关考题：
Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?A.Control the amount of lube oil burned in the combustion chamberB.Transmit heat from the piston to the cylinder linerC.Prevent damage to ring groove inserts by acting as a heat damD.Dissipate combustion chamber gas pressure by channeling it through the ring gap
Theois designed with a primary combustion chamber for burning sludge oil and ／or solid waste, and two secondary combustion chambers for9ases.burning uncombusted exhaust A.boilerB.separatorC.incineratorD.treatment lological sewage
Have you ever served the auxiliary engine to combustion heavy oil? What should be borne in mind when transferring oil; from heavy oil to light oil?
When an auxiliary boiler is panting and emitting(发出) black smoke, you should______.A.increase the fuel oil temperatureB.decrease the fuel oil temperatureC.decrease the fuel oil supply pressureD.increase the air supply
Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ignited by ______.A.spark plugsB.glow plugsC.heat of compressionD.a magneto
单选题The viscosity regulator controls the （） of the fuel oil in order to provide the oil at the correct viscosity for combustion.AtemperatureBpumping rateCpressureDheat
单选题The consistent burning of fuel oil with a high sulfur content in a diesel engine will result in （）Aclogged fuel injection pumpsBincreased cylinder liner wearCintake valve stem corrosionDvarnish deposit on pistons
单选题When the fuel oil is burning in the combustion chamber, it （）.Agives up large amount of heatBgives off large amount of heatCgives up large amount of steamDgives off large amount of steam
单选题The primary function of a fuel delivery check valve assembly is to（）Adeliver proper fuel quantity to the injection nozzleBprovide rapid fuel injection cutoffCcontrol fuel quantity entering the pump bodyDcontrol fuel pressure delivered to the combustion chamber
单选题Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.Aspark plugsBglow plugsCheat of compressionDa magneto
单选题The burning of fuel oil in a diesel engine having a high sodium content, will cause （）Acorrosion and grooving of exhaust valvesBcorrosion and gumming of the fuel injection pumpCsalt deposits in the exhaust manifoldDslag deposits in the fuel injection equipment
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The ability of a fuel particle to travel into the combustion chamber before burning is called （）.ApenetrationBpermanenceCturbulenceDatomization
单选题The viscosity regulator controls the fuel oil temperature （） provide oil at the correct viscosity for combustion.Ain order thatBbecause ofCin order toDowing to
单选题When an auxiliary boiler is panting and emitting black smoke, you should （）.Aincrease the fuel oil temperatureBdecrease the fuel oil temperatureCdecrease the fuel oil supply pressureDincrease the air supply
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What is the term given to the process of breaking up fuel oil into very fine particles for better combustion?（）ASettlingBStrainingCSprayingDAtomizing
单选题Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?（）AControl the amount of lube oil burned in the combustion chamberBTransmit heat from the piston to the cylinder linerCPrevent damage to ring groove inserts by acting as a heat damDDissipate combustion chamber gas pressure by channeling it through the ring gap
单选题The viscosity regulator controls （） in order to provide oil at the correct viscosity for combustion.Athe engines speedBthe engines loadCthe fuel oil temperatureDthe fuel oil flow
单选题The term “proper metering”, as applied to a diesel fuel injection system, can be best defined as （）.Adelivering the same quantity of fuel to each cylinder for each power stroke according to engine loadBmaintaining the metering adjustment for a reasonable period under all load conditionsCtiming fuel injection to obtain maximum power and good fuel economyDdistributing the fuel to all parts of the combustion chamber for proper combustion
单选题The ash content of a fuel oil is significant to the operating engineer because it （）Ais an indication of the amount of noncombustible material present in the oilBindicates the quantity of energy released by burning a unit amount of the fuelCis useful for determining proper atomization temperaturesDreflects the overall thermal efficiency of the fuel oil service system
单选题The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a （）.Aair bottleBair compressorCcrank caseDcombustion chamber
单选题The rate of fuel injection in a diesel engine cylinder depends primarily on （）.Athe size of the holes in the fuel nozzleBtiming of the pumpCsupply pressure to the pumpDshape of the combustion chamber
单选题The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the （）.Aquantity of fuel to be receivedBflash point of the fuel as it is receivedCfuel temperature as it is receivedDviscosity of the fuel being received
单选题When the incinerator is stopped, which of the following is wrong?（）AAfter stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutesBClose auxiliary burner firstly and then close main burnerCAfter stopping fuel, restoring the position of main fuel supply valveDStop blower as soon as stopping supplying fuel oil
单选题When comparing different fuels for different engines, the ignition quality of diesel fuel oils becomes a less critical consideration as （）Athe amount of lube oil additives increaseBpiston speeds increaseCinjection pressure decreaseDengine speeds decrease
单选题When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）AThe diesel oil must never be allowed to mix with the heavy fuelBThe temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valveCThe heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valveDThe heating steam must be secured before the diesel oil passes through the three-way valve