单项选择题
A.smoky exhaust B.starting failure C.overload D.over speed
Defective atomizer in a diesel engine will lead to（）.A....
单项选择题Defective atomizer in a diesel engine will lead to（）.
A supercharged engine differs from an un-supercharged e...
单项选择题A supercharged engine differs from an un-supercharged engine it operates at an increases pressure（）.
A.in which B.on which C.at which D.in that
Cooling makes the engine metals their mechanical proper...
单项选择题Cooling makes the engine metals their mechanical properties（）.
A.Remain B.to remain C.retain D.to retain
