单项选择题
Fuel injected into a diesel engines cylinder is ignited by （）.
A.the heat compressed fuel/air mixture in the cylinder B.the fuel igniter C.the fuel injector D.the fuel pump
单项选择题 Fuel has been injected but ignition fails The possible cause may be （）.
单项选择题 Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
单项选择题 Four strokes consist of suction, compression, （） and exhaust stroke.
