单项选择题
The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a （）.
A.air bottle B.air compressor C.crank case D.combustion chamber
单项选择题 The diesel engine is a type of （）.
单项选择题 The diameters of the crankpins should be measured using （）.
单项选择题 The diameter of the gravity disc is too big It causes oil to flow through the water outlet We changed the disc and no （） is found in the water outlet.
