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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
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更多 “ 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 ” 相关考题
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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
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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
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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?
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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
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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
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单选题The viscosity regulator controls the （） of the fuel oil in order to provide the oil at the correct viscosity for combustion.A
temperatureB
pumping rateC
pressureD
heat
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单选题The consistent burning of fuel oil with a high sulfur content in a diesel engine will result in （）A
clogged fuel injection pumpsB
increased cylinder liner wearC
intake valve stem corrosionD
varnish deposit on pistons
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单选题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
考题
单选题The primary function of a fuel delivery check valve assembly is to（）A
deliver proper fuel quantity to the injection nozzleB
provide rapid fuel injection cutoffC
control fuel quantity entering the pump bodyD
control fuel pressure delivered to the combustion chamber
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单选题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
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单选题The burning of fuel oil in a diesel engine having a high sodium content, will cause （）A
corrosion and grooving of exhaust valvesB
corrosion and gumming of the fuel injection pumpC
salt deposits in the exhaust manifoldD
slag deposits in the fuel injection equipment
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单选题A viscosity regulator used for an engine is usually provided in order to （） for an engine burning heavy fuel oil.A
regulate the fuel supplyB
maintain a constant fuel viscosity at the fuel valvesC
maintain efficient coolingD
alter the fuel density
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单选题The ability of a fuel particle to travel into the combustion chamber before burning is called （）.A
penetrationB
permanenceC
turbulenceD
atomization
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单选题The viscosity regulator controls the fuel oil temperature （） provide oil at the correct viscosity for combustion.A
in order thatB
because ofC
in order toD
owing to
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单选题When an auxiliary boiler is panting and emitting 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
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单选题When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.A
filter to remove the fuel oilB
use the settler to remove the fuel oilC
remove the fuel oil by centrifugingD
drain and then renew the lube oil supply
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单选题What is the term given to the process of breaking up fuel oil into very fine particles for better combustion?（）A
SettlingB
StrainingC
SprayingD
Atomizing
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单选题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
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单选题The viscosity regulator controls （） in order to provide oil at the correct viscosity for combustion.A
the engines speedB
the engines loadC
the fuel oil temperatureD
the fuel oil flow
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单选题The term “proper metering”, as applied to a diesel fuel injection system, can be best defined as （）.A
delivering the same quantity of fuel to each cylinder for each power stroke according to engine loadB
maintaining the metering adjustment for a reasonable period under all load conditionsC
timing fuel injection to obtain maximum power and good fuel economyD
distributing the fuel to all parts of the combustion chamber for proper combustion
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单选题The ash content of a fuel oil is significant to the operating engineer because it （）A
is an indication of the amount of noncombustible material present in the oilB
indicates the quantity of energy released by burning a unit amount of the fuelC
is useful for determining proper atomization temperaturesD
reflects the overall thermal efficiency of the fuel oil service system
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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 （）.A
air bottleB
air compressorC
crank caseD
combustion chamber
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单选题The rate of fuel injection in a diesel engine cylinder depends primarily on （）.A
the size of the holes in the fuel nozzleB
timing of the pumpC
supply pressure to the pumpD
shape of the combustion chamber
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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 （）.A
quantity of fuel to be receivedB
flash point of the fuel as it is receivedC
fuel temperature as it is receivedD
viscosity of the fuel being received
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单选题When the incinerator is stopped, which of the following is wrong?（）A
After stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutesB
Close auxiliary burner firstly and then close main burnerC
After stopping fuel, restoring the position of main fuel supply valveD
Stop blower as soon as stopping supplying fuel oil
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单选题When comparing different fuels for different engines, the ignition quality of diesel fuel oils becomes a less critical consideration as （）A
the amount of lube oil additives increaseB
piston speeds increaseC
injection pressure decreaseD
engine speeds decrease
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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?（）A
The diesel oil must never be allowed to mix with the heavy fuelB
The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valveC
The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valveD
The heating steam must be secured before the diesel oil passes through the three-way valve
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