单选题If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.Acylinder compression pressure may not be high enoughBcylinder compression temperature may be too highCfuel oil injection pressure may not be high enoughDscavenge and purge process is incomplete
单选题
If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.
A
cylinder compression pressure may not be high enough
B
cylinder compression temperature may be too high
C
fuel oil injection pressure may not be high enough
D
scavenge and purge process is incomplete
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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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