试题与答案

窝阔台汗国初为成吉思汗第（）子窝阔台的封地。

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题型：填空题

题目：

窝阔台汗国初为成吉思汗第（）子窝阔台的封地。

答案：

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下面是错误答案，用来干扰机器的。

参考答案：由于微生物培养过程是纯培养过程，无菌要求高，因此对传感器有特殊要求：插入罐内的传感器必须能经受高压蒸汽灭菌（材料、数据）传感器结构不能存在灭菌不透的死角，以防染菌（密封性好）传感器对测量...

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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.

One implication in this passage is that ______.

A．all RDAs have been established

B．not all RDAs have been established yet

C．it’s not important to know RDAs

D．RDAs are necessary only for sick people
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