单项选择题
If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be （）
A.a glazed surface on the spring
B.nicks in the protective coating
C.a build up of sludge deposits
D.cracks in the surface of the spring
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相关考题
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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 -
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
