单项选择题
A.The sequence of events that produce a power pulse B.One rotation of the engine crankshaft C.One stroke of a piston D.All of the above
An advantage of aluminum pistons, when compared to cast...
单项选择题An advantage of aluminum pistons, when compared to cast iron pistons is （）.
A.greater high temperature strength B.better heat conductivity C.greater weight per cubic inch D.increased resistance to wear
Which of the combustion parameters listed is used in a ...
单项选择题Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?（）
A.Atomization B.Metering C.Effective stroke D.Penetration
Successful combustion inside the cylinders of a diesel ...
单项选择题Successful combustion inside the cylinders of a diesel engine is dependent upon （）.
A.fine atomization B.high temperature C.good mixing of fuel and air D.all of the above
