单项选择题
A.the exhaust will be clear B.fuel consumption will be low C.all the fuel will be burned at top dead center D.fuel consumption will be high
In a diesel engine, when installing new piston rings it...
In a diesel engine, when installing new piston rings it is important to check（） Ⅰ.ring gap clearance Ⅱ.side clearance
A.Ⅰ only B.Ⅱ only C.both Ⅰ and Ⅱ D.neither Ⅰnor Ⅱ
At bottom dead center, the centerline of the connecting...
单项选择题At bottom dead center, the centerline of the connecting rod usually coincides with the（）
A.angularity of the piston motion B.inertia moment from the piston C.centerline of the cylinder D.centerline of the king pin
Which of the following problems represent one possible ...
单项选择题Which of the following problems represent one possible cause of high lube oil consumption in a four stroke diesel engine?（）
A.Worn intake valve guides B.Pitted pre-combustion chambers C.Loose valve tappets D.High exhaust back pressure
