单选题Excessive piston ring wear in a diesel engine will cause（）Ahigh lube oil viscosityBincreased lube oil consumptionClow lube oil temperaturesDhigh firing pressures
单选题
Excessive piston ring wear in a diesel engine will cause（）
A
high lube oil viscosity
B
increased lube oil consumption
C
low lube oil temperatures
D
high firing pressures
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