单项选择题
A.opening the exhaust ports B.placed on top of the engine along its centerline C.farthest from the cylinder head D.nearest to the cylinder head
During which of the listed piston stroke of a four-stro...
单项选择题During which of the listed piston stroke of a four-stroke/cycle diesel engine, is the piston moving downward?（）
A.Intake stroke B.Compression stroke C.Exhaust stroke D.Pumping stroke
A piston is at bottom dead center when it is（）A.opening...
单项选择题A piston is at bottom dead center when it is（）
A.opening the exhaust ports B.closing the fuel ports C.farthest from the cylinder head D.nearest to the cylinder head
The average pressure exerted on piston during each powe...
单项选择题The average pressure exerted on piston during each power stroke is termed（）
A.indicated horsepower B.mean effective pressure C.exhaust back pressure D.compression pressure
