单项选择题
A.worn main bearing journals B.torsional stress deformation C.slack thrust bearings D.bearing shells shim dimensions
A decrease in the flash point of diesel engine lube oil...
单项选择题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
The emulsion of the oil is mainly caused by （）.A.the so...
单项选择题The emulsion of the oil is mainly caused by （）.
A.the solid impurities of large particle B.the solid impurities of fine particle C.the water content D.both water and solid impurities
Impurities in the fuel oil will affect the operation of...
单项选择题Impurities in the fuel oil will affect the operation of the engine, which has （） the use of separator and some other devices.
A.brought about B.caused for C.resulted from D.led
