单项选择题
A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must （）
A.line up the engine fore restarting with light diesel oil
B.reposition the fuel injection cam
C.change the intake and exhaust valve cam positions
D.place the starting cam in the intermediate position
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相关考题
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单项选择题
Which of the listed conditions can cause lacquer to be deposited on a piston skirt?（）
A.High sulphur content fuel
B.High lube oil temperatures
C.High vanadium content fuel
D.Excessive piston slap -
单项选择题
Reducing the clearance between a valve stem and rocker arm will result in the valve （）
A.having a shorter duration of opening
B.having a longer duration of opening
C.closing sooner
D.opening later -
单项选择题
If you increase the clearance between a valve stem and rocker arm, which of the listed condition will occur?（）
A.valve will open later
B.valves will close later
C.amount of fuel injected will be increased
D.amount of fuel injected will be decreased
