单项选择题
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（）
单项选择题 Before being shut down, a diesel engine should idle a few minutes in orderto （）
单项选择题 The main propulsion diesel continues running after you try to shut downYoushould now attempt to（）