A、low TBN value
B、high alkaline reserve
C、low flash point
D、high pour point
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A、High-speed operation and rough handling of hatches are dangerous. B、Low-speed operation and rough handling of hatches are dangerous. C、Low-speed operation and rough handling of hatch covers are dangerous. D、High-speed operation and rough handling of hatch covers are dangerous.
A、A.large conical springs B、B.compressed air pressure C、C.hydraulic pressure D、D.exhaust gas pressure
A、Lubrication to the defective cylinder should be increased B、Cooling water temperature to the engine should be increased C、Only the turbocharger speed should be reduced D、Engine speed should be reduced
A、A. low-speed control B、B. inching control C、C. high-speed control D、D. slow-speed control
A、decrease the time required between cleanings B、removes all large and small foreign objects C、ensure a positive flow of oil at all times D、ensure that all lube oil has been treated twice
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