单选题A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by（）Aa leaking fuel injector nozzleBa clogged air filterCexcessively early fuel injectionDmalfunctioning valves
单选题
A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by（）
A
a leaking fuel injector nozzle
B
a clogged air filter
C
excessively early fuel injection
D
malfunctioning valves
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