单项选择题
A.worn connecting rod bearings B.worn engine cylinder liners C.high cylinder firing pressure D.stuck spring-loaded manhole covers
Scuffed cylinder liner wearing surfaces in a diesel eng...
单项选择题Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A.chromium plating piston rings B.knurling the piston skirt C.extended maximum power operation D.applying load to a cold diesel engine
If the relief valve on a diesel engine cylinder lifts, ...
单项选择题If the relief valve on a diesel engine cylinder lifts, the cause could be due to （）
A.liquid in the cylinder B.low compression in the cylinder C.high exhaust temperature D.poor fuel penetration
Which of the following operation will have a direct imp...
单项选择题Which of the following operation will have a direct impact on the rate of wear in a cylinder liner （）
A.amount of scavenge air to the cylinder B.quality of fuel injected C.viscosity of the lube oil D.compression ratio of the piston
