單項(xiàng)選擇題

What preventative maintenance should be done frequently to diesel engine starting air receivers?（）

A.Drain the accumulated moisture
B.Test the relief valves
C.Watch the temperature to prevent fluctuations in pressure
D.Clean the interior to remove oil and foreign matter

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單項(xiàng)選擇題

Crank web deflection readings will give a positive indication of （）.

A.worn main bearing journals
B.torsional stress deformation
C.slack thrust bearings
D.bearing shells shim dimensions

單項(xiàng)選擇題

A decrease in the flash point of diesel engine lube oil indicates the lube oil has become （）.

A.contaminated with sludge
B.contaminated with carbon
C.diluted with fuel oil
D.diluted with water

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What preventative maintenance should be done frequently to diesel engine starting air receivers?（）

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Crank web deflection readings will give a positive indication of （）.

A decrease in the flash point of diesel engine lube oil indicates the lube oil has become （）.