单项选择题

Which of the routine maintenance procedure listed is required for starting air receivers?（）

A.Frequent draining of accumulated moisture
B.Frequent testing of relief valves
C.A close watch on temperature to prevent fluctuations in pressure
D.Frequent cleaning to re move oil and foreign matter

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单项选择题

Which of the routine maintenance procedures listed is required for starting air receivers?（）

A.over-speeding
B.overload
C.low exhaust temperature
D.high crankcase pressure

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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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