The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the（）<br>A:American Petroleum<br>B:Institute number viscosity index number<br>C:Seconds Saybolt Furol number<br>D:Seconds Saybolt Universal number

The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the（）
A:American Petroleum
B:Institute number viscosity index number
C:Seconds Saybolt Furol number
D:Seconds Saybolt Universal number

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