单项选择题
A.the pump supply pressure
B.the slope of the fuel cam
C.how the plunger is rotated
D.the number of sleeve segments engaged with the rack
单项选择题 If an auxiliary diesel engine temperature is higher than normal ,but the thermostat is determined not to be defective you would suspect a /an （）
单项选择题 Which of the following beneficial results can be expected from supercharging a previously naturally aspirated engine?（）
单项选择题 Late fuel injection in a diesel engine is indicated by low firing pressure with（）