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单选题
Faulty operation of diesel engine fuel injection nozzles can be directly caused by （）.
A
water in the fuel oil supply
B
excessive fuel nozzle holder cooling
C
a distorted fuel spray pattern
D
leakage past the plunger into the oil drain
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fuel knockB
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a leaking fuel injection nozzleB
a clogged air filterC
early fuel injectionD
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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
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单选题The high pressure in fuel injection system of the diesel engine is produced by the （）.A
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单选题The rate of fuel injection in a diesel engine cylinder depends primarily on （）.A
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supply pressure to the pumpD
shape of the combustion chamber
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单选题The fuel injection pumps on a diesel engine are controlled by a linkage system attached to the （）A
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a higher cetane number of fuel oilB
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单选题Faulty operation of diesel engine fuel injection nozzles can be a direct cause of（）.A
excessive fuel nozzle holder coolingB
sediment in the fuel supplyC
distortion of the fuel spray patternD
improper atomization of the fuel
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单选题Fuel is admitted to a diesel engine cylinder through the （）.A
intake valvesB
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exhaust portsD
injector nozzles
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navigating with a low diesel engine speedB
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increasing the efficiency of propellerD
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单选题Air in the fuel lines to the fuel injection nozzles of a diesel engine will cause the engine to （）A
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单选题Air in the fuel lines to the fuel injection nozzles of a diesel will result in （）.A
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