单项选择题
A.a cracked cylinder head B.a leaky cylinder head gasket C.a cracked cylinder liner D.any of the above
Following an overhaul of a crosshead type diesel engine...
单项选择题Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?（）
A.Ensure proper cylinder lube oil flow B.Open all air space drain cocks C.Open all indicator valves D.all of the above
Fuel oil is regularly transferred to the day tank in or...
单项选择题Fuel oil is regularly transferred to the day tank in order to （）
A.allow impurities to settle out of the fuel B.allow air to escape from the fuel C.make fuel available for immediate use D.all of the above
Starting air valves are held firmly on their seats by（）...
单项选择题Starting air valves are held firmly on their seats by（）
A.cam rollers on the camshaft B.spring force C.air pressure on top of the valve differential piston D.air pressure on the bottom of the valve differential piston
