单选题Low compression pressure in a diesel engine can be caused by（）Aimproperly seating intake valvesBleaking cylinder liner seal ringsClate fuel injection timingDcarbon deposits on the piston
单选题
Low compression pressure in a diesel engine can be caused by（）
A
improperly seating intake valves
B
leaking cylinder liner seal rings
C
late fuel injection timing
D
carbon deposits on the piston
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