单项选择题
In large, low-speed, main propulsion diesel engine, position ring groove wear usually occurs at the（）
A.top of the ring groove
B.back of the ring groove
C.bottom of the ring groove
D.piston ring end clearance
点击查看答案&解析
相关考题
-
单项选择题
Diesel engine blow-by is the leakage of combustion gases past the （）
A.oil rings only
B.compression and scraper rings
C.cylinder liner sealings
D.cylinder liner ring grooves -
单项选择题
In a diesel engine, blow-by is a result of combustion gases leaking into the crankcase past the （）
A.wrist pin bushings
B.compression rings
C.cylinder liner seals
D.cylinder liner sealing ring -
单项选择题
A centrifuge will satisfactorily remove which of the following contaminants from fuel oil?（）
A.Gasoline
B.Water
C.Lubricating oil
D.sulphur compounds
