单项选择题
One advantage of dry cylinder liners used in a diesel engine is the（）
A.lower thermal expansion rates than wet liners
B.greater heat transfer rate than wet liners
C.greater wear resistance than wet liners
D.procedure to replace dry liners is simpler than for wet liners
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单项选择题
Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? （）
A.Viscosity is decreased
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单项选择题
It is easier to replace a dry cylinder liner than a wet one because（）
A.of the thin wall thickness
B.honing makes it easier to maintain the desired oil ilm
C.water seals are not required
D.it fits more loosely due to a decrease in heat transfer through the composite wall
