单项选择题
A.injection B.penetration C.atomization D.compression
Because the timing of injection is crucial, （） mounted ...
单项选择题Because the timing of injection is crucial, （） mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.
A.gears B.rams C.barrels D.cams
Fuel has to be injected into the engine at a high press...
单项选择题Fuel has to be injected into the engine at a high pressure so that it （） correctly.
A.is purified B.in timed C.is compressed D.atomizes
Cylinder liners from older lower powered engines had a ...
单项选择题Cylinder liners from older lower powered engines had a uniform wall thickness and the cooling was achieved by circulating cooling water through a space formed between （）.
A.crown and skirt B.liner and jacket C.ring and groove D.jacket and block
