单选题A fuel leak occurs in the high pressure fuel piping between the injection pump and fuel nozzleThis requires immediate repair because of the （）Ahigh cost of fuelBserious fire hazardCpossibility of pollutionDpoor combustion which will occur in that cylinder
单选题
A fuel leak occurs in the high pressure fuel piping between the injection pump and fuel nozzleThis requires immediate repair because of the （）
A
high cost of fuel
B
serious fire hazard
C
possibility of pollution
D
poor combustion which will occur in that cylinder
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相关考题：
If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at theA.fuel line connections to the cylinder injection valvesB.gasket surfaces of the fuel oil filtersC.discharge fittings of the fuel injector pumpsD.suction side of the fuel oil transfer pump
If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because theA.cylinder compression pressure may not be high enoughB.cylinder compression temperature may be too highC.fuel oil injection pressure may not be high enoughD.scavenge and purge process is incomplete
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单选题Heat damage to fuel injection nozzles on small high-speed diesel engines, can be prevented by（）Aemploying fuel oil as a cooling mediumBpreventing hard carbon deposit on nozzle tipsCavoiding fuel oil temperature exceeding builder’s specificationDensuring good metallic contact between nozzles and cylinder heads
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单选题The replacement piping for diesel engine high pressure fuel systems must be the same length and diameter as the original piping to （）.Aavoid unnecessary pints inventoryBkeep torsional vibration constantCuse existing supports and bracesDmaintain specified injection characteristics
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单选题A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to （）Afeel the high pressure fuel lineBcheck the cylinder exhausts for white smoke frequentlyCcheck the cylinder exhaust temperatureDisolate each cylinder and inspect the injector
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单选题A diesel engine will lose power if fuel injection occurs too late in the cycle, because the（）Afuel droplets will burn as they leave the fuel injectorBfuel will not be properly atomized in the cylinderCmaximum expansion of the burned fuel cannot take place in the cylinderDcompression pressure will be too low to cause fuel ignition
单选题If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the （）Afuel line connections to cylinder injection valvesBgasket surfaces of the fuel oil filtersCdischarge fitting of the fuel injector pumpsDsuction side of the fuel oil tran