单项选择题
A.prevents spark generation B.removes combustible gases C.determines the level of combustible gases D.provides inert gas generation in crankcase
Regarding a Diesel engine crankcase, the general arrang...
单项选择题Regarding a Diesel engine crankcase, the general arrangement and installation should preclude the possibility of （）
A.free entry of air to the crankcase B.water entering the crankcase while engine wash-downs are being performed C.excessive oil leakage during periods of increased blow-by D.sub-cooling internal components
If the valve tappets in a diesel engine are set at grea...
单项选择题If the valve tappets in a diesel engine are set at greater clearances than those specified by the engine manufacturer, those valves will （）
A.open late and close early B.open late and close late C.fail to open when the engine is cold D.fail to open at normal operating temperature
Lubricating systems for diesel engines are usually desi...
单项选择题Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine （）
A.camshaft beatings B.main bearings C.piston crowns D.cylinder walls
