单项选择题
The breaking-up of fuel as it enters a diesel engine cylinder is known as（）
A.airification B.vaporization C.atomization D.gasification
单项选择题 The exhaust ports of a diesel engine using the cross-flow scavenging method are opened and closed by the （）
单项选择题 When fuel enters the crankcase of a diesel engine, it （）
单项选择题 In the construction of a diesel engine, what is the purpose of end plates?（）
