单项选择题
A.changed B.centrifuged C.filtered D.settled
How are the pressure and temperature affected in a dies...
单项选择题How are the pressure and temperature affected in a diesel engine cylinder during compression?（）
A.Pressure and temperature decrease B.Pressure and temperature increase C.Pressure decreases and temperature increases D.Pressure increases and temperature decreases
A diesel engine is warmed up and white vapor is in the ...
单项选择题A diesel engine is warmed up and white vapor is in the exhaust，this could indicate （）
A.excessive cylinder lubrication B.a lugging engine C.a leaking cylinder liner D.overloading of one cylinder
The main operating characteristic of diesel engines whi...
单项选择题The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the （）
A.method of supplying air B.cooling system C.method of igniting fuel D.valve operating mechanism
