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【单选题】
将二硫化钼作为添加剂，加入润滑脂中可以增强润滑脂（）的性能。
A.
防水
B.
稳定
C.
抗磨
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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】下面()不是润滑脂的特点。
A.
可简化润滑系统设计，不必专用的供应设备
B.
密封性差，需借助密封材料态封，灰尘、水分易侵入
C.
有良好的密封作用，可防尘，防水分进入
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【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】下面()不是润滑脂的特点。
A.
可简化润滑系统设计，不必专用的供应设备
B.
密封性差，需借助密封材料态封，灰尘、水分易侵入
C.
有良好的密封作用，可防尘，防水分进入
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