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【简答题】

简述载荷润滑添加剂中的油性剂,抗磨剂,极压机作用机理。

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参考解析:
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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.

【多选题】新斯的明的作用机理是:

A.
直接激动N2受体
B.
直接激动M受体
C.
促进运动神经末梢释放乙酰胆碱
D.
直接激动N1受体
E.
抑制胆碱酯酶

【单选题】新斯的明的作用机理是

A.
促进Ca2+内流
B.
兴奋胆碱酯酶
C.
抑制胆碱酯酶
D.
增加乙酰胆碱的合成
E.
兴奋中枢

【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