单项选择题
A.low exhaust temperature B.low firing pressure C.fuel knock in each cylinder D.mechanical knock in each cylinder
In a unit injector the amount of fuel that will be forc...
单项选择题In a unit injector the amount of fuel that will be forced through the spray nozzle on each stroke of the plunger depends on （）
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
If an auxiliary diesel engine temperature is higher tha...
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 （）
A.cavitation erosion in the water jackets B.excess corrosion inhibitor in the coolant C.dirty jacket water cooler D.defective turbocharger
Which of the following beneficial results can be expect...
单项选择题Which of the following beneficial results can be expected from supercharging a previously naturally aspirated engine?（）
A.Increased turbulence B.increased mechanical efficiency C.Increased brake mean effective pressure D.All of the above
