logo - 刷刷题
下载APP
【判断题】

在矿物油中加入硫、氯等添加剂可制成极压切削油,极压切削油在高速切削和难加工材料的车削中应用效果良好。

A.
正确
B.
错误
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food.Fergus Clydesdale, head of the department of food science and nutrition at the University of Massac...

A.
They overlook the risks of the food they eat.
B.
They overestimate the hazards of their food.
C.
They are overoptimistic about the safety of their food.
D.
They overstate the government's interference with the food industry.

【单选题】切削油主要由()构成。

A.
动物油
B.
植物油
C.
动物、植物油
D.
矿物油

【多选题】下列属于食品添加剂的是()。

A.
防腐剂
B.
酸味剂
C.
漂白剂
D.
凝固剂