单项选择题
A.vanadium B.carbon C.copper D.ash
Which of the following problems may occur if the openin...
单项选择题Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?（）
A.The amount of fuel injected will be increased B.The start of injection will be retarded C.The nozzle will permit fuel to dribble D.The spray pattern will be distorted
The required amount in the change of speed necessary be...
单项选择题The required amount in the change of speed necessary before a governor will make a corrective movement is known as （）.
A.speed droop B.sensitivity C.stability D.promptness
Turbulence in a diesel engine cylinder is of major impo...
单项选择题Turbulence in a diesel engine cylinder is of major importance in providing （）.
A.proper fuel metering B.complete fuel/air mixing C.minimal fuel penetration D.proper fuel timing
