单项选择题
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
Late fuel oil injection in a diesel engine can result i...
单项选择题Late fuel oil injection in a diesel engine can result in （）
A.fuel knock B.increased power C.low compression pressure D.high exhaust temperature
A crankshaft whose center of gravity coincides with its...
A crankshaft whose center of gravity coincides with its center line is said to be（） Ⅰ.statically balanced Ⅱ.dynamically balanced
A.Ⅰ only B.Ⅱ only C.both Ⅰ and Ⅱ D.neither Ⅰ nor Ⅱ
