题目
When separating the lube oil without additive, it is usually cleaned with hot water; the aim is to remove ____ from it.A. acidB. sludgeC. mechanical impurityD. salinity
When separating the lube oil without additive, it is usually cleaned with hot water; the aim is to remove ____ from it.
A. acid
B. sludge
C. mechanical impurity
D. salinity
题目解答
答案
A. acid
解析
在分离无添加剂的润滑油时，通常使用热水清洗，目的是去除酸性物质。这是因为热水可以有效地中和润滑油中的酸性成分，从而提高润滑油的质量和性能。