单项选择题
A.Spark plug B.Heat of compression C.Carburetor D.Glow plug
If a diesel engine fails to start，one of the likely cau...
单项选择题If a diesel engine fails to start，one of the likely causes is （）
A.low compression temperature B.low ambient air pressure C.high lube oil pump pressure D.high fuel oil booster pump pressure
Icreasing the exhaust valve tappet clearance of a diese...
单项选择题Icreasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening （）
A.later and closing earlier B.later and closing later C.earlier and closing earlier D.earlier and closing later
When the opening pressure of a diesel fuel injector is ...
单项选择题When the opening pressure of a diesel fuel injector is greater than that specified by the engine manufacturer，the （）
A.quantity of fuel injected is decreased B.quantity of fuel injected will always be increased C.start of injection is advanced D.duration of injection will always be greater
