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Background Knowledge u Time Zones and International date Line rn 1884 scientists divided the world into 24 time zones. The time in the zone containing greenwich is called Greenwich Mean Time Going westwards around the world from Greenwich, we subtract an hour for each
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Background knowledge The English Channel: commonly called the Channel is an arm of the Atlantic Ocean separating the southern coast of England from the northern coast of france, and connecting the Atlantic in the west with the north Sea on the east via the strait of dover
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提出一种新的造型曲面—BRB样条曲面,此曲面兼有Bezier曲面和B样条曲面的基本造型优点,造型性能综合指标高。又给出新曲面的定义和几何性质,并讨论了BRB样条曲面的拼接问题
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Nuclear power 1 Nuclear power can come from the fission of uranium plutonium or thorium or the fusion of hydrogen into helium. Today it is almost all uranium. The fission of an atom of uranium produces 10 million times the energy produced by the combustion of an atom of carbon from coal. By 1993, there'd been 109 licensed
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为了充分利用我国含砷铁矿资源,采用精炼渣+不同Ca合金对钢液进行脱砷研究,获得较高的脱砷率,其中Si-CaBa合金综合脱砷效果最佳.在相同操作条件下,通过改变实验条件,对钢液中砷含量随时间变化规律以及对脱砷效果的影响进行研究,并对高砷含量下不同Ca合金加入钢液后Ca的有效利用率进行详细分析
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一、数组操作函数 二、数组构技法综合 三、高维数组 四、“非数”和“空”数组 五、关系操作和逻辑操作
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Pre-reading Information 1. Boxing Sport of fighting with fists, also called pugilism and prizefighting 2. Early History Depicted on the walls of tombs at Beni Hasan in Egypt, dating from about 2000 te 1500 B.C., boxing is one of the oldest
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Useful Information Advantage of reading books. The old saying: \To open a book is always helpful.\clearly shows us how good it is to read a book. Reading is a good thing, but we must pay great attention t the choice of books. It's true that we can derive benefits from good books. As a matter of fact, books
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Background knowledge Four steps one has to go through in looking for a job: a. Look for a post in newspapers, on TV, etc. b. Write a formal application to the target company and follow up with a call C. Get an answer from the company d. Be interviewed by the company
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When Laura reached school-going age the discussions about moving became more urgent Her father did not want the children to go to school with the village children and for once her mother agreed with him. Not because, as he said, they ought to have a better education than they could get at Lark Rise; but because she feared they would tear their clothes
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