单选题Fuel has been injected but ignition fails The possible cause may be （）.Aleaky exhaust valveBincreased scavenging air temperatureCengine cylinders not scavenged sufficientlyDwater in the fuel oil
单选题
Fuel has been injected but ignition fails The possible cause may be （）.
A
leaky exhaust valve
B
increased scavenging air temperature
C
engine cylinders not scavenged sufficiently
D
water in the fuel oil
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