单项选择题
A.a service tank B.a collecting tank C.a sump D.a settling tank
In a purifier, the interface between the liquid seal an...
单项选择题In a purifier, the interface between the liquid seal and the oil should be positioned as close as possible to （）.
A.the outlet of oil B.the outlet of water C.the bowl periphery D.the center of bowl
In a purifier changing to a gravity disc with larger ho...
单项选择题In a purifier changing to a gravity disc with larger hole diameter will move the interface towards the （）.
A.bowl periphery B.bowl center C.upper surface D.lower surface
In a marine diesel engine the oil sump is （）.A.just bel...
单项选择题In a marine diesel engine the oil sump is （）.
A.just below the crankcase B.the oil cup for the exhaust valve C.the pan for collecting drain fuel oil D.oil circulating pump
