Our body uses water as a lubricant Water reduces friction between the parts of the body that come into contact. The eyes need water to stay constantly wet. Lacrimal glands constantly produce enough liquid for this purpose. An alteration of this function, along with other eye diseases, is respo...
百度试题 结果1 题目 Typical examples of water's role as a lubricant are lubricating fluids in knees and other joints, and tears in eyes.A.错误B.正确 相关知识点: 试题来源: 解析 B 反馈 收藏
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Using water as a lubricant, the entire life cycle of the equipment does not produce any waste oil discharge. 4).Simple structure and low maintenance cost The machine structure is simple, easy to mai...
Using water as a lubricant, the entire life cycle of the equipment does not produce any waste oil discharge. 4).Simple structure and low maintenance cost The machine structure is simple, easy to maintain, only need to replace the air ...
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After cutting, Group N uranium rods were abraded successively on all surfaces from grades p600–2500, using SiC grit paper and water as lubricant. The uranium rods were then submersed in 5 M HNO3 for 3 hrs until they appeared ‘shiny’, before being rinsed and cleaned in acetone and the...
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Using water as a lubricant, the entire life cycle of the equipment does not produce any waste oil discharge. 4).Simple structure and low maintenance cost The machine structure is simple, easy to maintain, only need to replace the air ...