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

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单项选择题

When installing rings on a diesel engine piston, you should check the ring（）

A.diametrical tension
B.gap clearance
C.radial thickness
D.face thickness

单项选择题

If the piston ring gap remains insufficient when installing new rings, youshould（）

A.install oversized rings
B.hone the cylinder liner to allow ring installation
C.compress the rings tighter with a compressing tool
D.file the ends of the rings

单项选择题

Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）

A.jam in the most worn part of the cylinder when the rings expand
B.break in the most worn part of the cylinder when the rings expand
C.wear eccentrically on the side opposite the end gap
D.overheat and jam at the top center on the combustion stroke