问题
问答题 简答题
在生产过程中，发现冷却液和润滑油有跑、冒、滴、漏的现象应如何处理？
答案
参考答案：在生产过程中，随时发现冷却液和润滑油有跑、冒、滴、漏现象，要立即停机进行检查修理，并将漏出的油、水清理干净，保持钻床和场地清洁。
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在生产过程中，发现冷却液和润滑油有跑、冒、滴、漏的现象应如何处理？
参考答案：在生产过程中，随时发现冷却液和润滑油有跑、冒、滴、漏现象，要立即停机进行检查修理，并将漏出的油、水清理干净，保持钻床和场地清洁。
| The United States government publishes guidelines for appropriate nutrient intakes. These are known as the Recommended Dietary Allowances (RDAs) and are updated regularly based on new research in nutrition. RDAs are suggested amounts of calories, protein, and some minerals and vitamins for an adequate diet. For other dietary substances, specific goals must await further research. However, for the U.S. population as a whole, increasing starch and fiber in one’s diet and reducing calories (primarily from fats. sugar, and alcohol) is sensible. These suggestions are especially appropriate for people who have other factors for chronic diseases due to family history of obesity, premature heart disease, diabetes, high blood pressure, and high blood cholesterol, or for those who use tobacco. Snacks can furnish about one-fourth of the calorie requirements among teenagers. Those snacks should also provide much of the day’s allowances for protein, minerals, and vitamins. Sandwiches, fruit, and milk make good snacks for active teenagers. Food from the food pyramid may be part of any meal. A grilled cheese sandwich or a bowl of whole-grain cereal is just as nutritious in the morning as it is at noon. In addition, a good breakfast consists of any foods that supply about one-fourth of the necessary nutrients for the day. |
Why are RDAs regularly updated
A．New discoveries in the science of nutrition are constantly being made.
B．Americans’ diets are constantly changing.
C．As people age, their nutritional needs change.
D．Very little is currently known about nutrition.