单项选择题
Which of the following problems may occur if the clearance between a piston and cylinder liner is insufficient?（）
A.Excessive wear B.Scuffing of the liner C.Piston seizure D.All of the above
单项选择题 When installing rings on a diesel engine piston, you should check the ring（）
单项选择题 If the piston ring gap remains insufficient when installing new rings, youshould（）
单项选择题 Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）
