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单选题
High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.
A
engine overload
B
low combustion temperature
C
plugged fuel nozzle holes
D
excessive compression pressure
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单选题Early injection timing is indicated by （）.A
high exhaust temperature and low firing pressureB
high exhaust temperature and high firing pressureC
low exhaust temperature and low firing pressureD
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high combustion temperatureB
high compression pressureC
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low water levelB
high water levelC
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high exhaust temperatureB
high lube oil temperatureC
low turbo-charger speedD
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an insufficient speed droop settingB
an overloaded engineC
clogged drain holes in the oil control ringsD
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单选题Black smoke exhausting from an operating diesel engine can be caused by （）A
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单选题The loss of the diesel engine cylinder air charge through leaky valves, piston rings, worn or scored liners, would be indicated by which of the following sets of conditions?（）A
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单选题High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.A
engine overloadB
low combustion temperatureC
plugged fuel nozzle holesD
excessive compression pressure
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单选题Low cylinder compression pressure and a high exhaust temperature may indicate （）A
early fuel injection timingB
leaking valvesC
a continuously open scavenge air portD
low cooling water temperature
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decreased piston to cylinder head clearanceB
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increasing the linear velocity of the exhaust gasesB
changing directions of exhaust gas flowC
decreasing the temperature of the exhaust gasesD
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cause blue smoke in the exhaust
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单选题Indications of （）are loss in power and irregular running of the engine, high exhaust temperatures of corresponding unite, high local temperature in scavenge trunk, surging of turbocharger, and sparks and smoke emitted from scavenge drains.A
a crankcase explosionB
a scavenge fireC
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单选题Which of the listed set of conditions indicates early fuel injection timing?（）A
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improper fuel rack positingB
lengthy exhaust valve durationC
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考题
单选题Black smoke coming from a boiler can be caused by （）.A
low water levelB
low oil pressureC
excessively high fuel pressureD
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单选题If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should（）A
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单选题For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）A
the temperature and flow quantity of the exhaust gas from M/EB
the quantity of steam demandedC
the rotary speed and the cooling water temperature of main engineD
efficiency of M/ turbocharger
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