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一、随机事件 几个概念 1、随机实验:满足下列三个条件的试验称为随机试验 (1)试验可在相同条件下重复进行; (2)试验的 可能结果不止一个,且所有可能结果是已知的; (3)每次试验哪个结果出现是未知的;随机试验以后简 称为试验,并常记为E
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固体污染物:水中以固体形态存在的污染物,其存在态包括悬浮状态、胶体状态和溶解状态三种。 悬浮物:粒径在1nm以下,主要以低分子或离子状态存在的固体物质。 浊度:水中含有泥土、粉砂、微细有机物、无机物、浮游生物等悬浮物和胶体物都可以使水质变的浑浊而呈现一 定浊度,水质分析中规定:1L水中含有1mgSi所构成的浊度为一个标准浊度单位,简称1度
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1,重点:政治理论和总论:邓论和政经结合 原因是今年大纲把邓论的经济理论放在了政经的第二章,所以更突出了邓论总论的地位。而且十六大提 出加强政治文明建设(还有物质文明和精神文明,者两个文明已经考过)
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Unit Seven Section A: A Rose Is a Rose Warm-up questions: 1. What gift will you choose to give your lover on Valentine's Day? And why? 2. Do you know the origin of Valentine's Day?
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Book Ii Unit 10 Section A The Bermuda Triangle Phenomenon I Warm-Up Questions: 1. Have you ever heard of the Bermuda Triangle? Do you know its location? 2. What have you heard about it? 3. According to your idea, why things disappear in that area?
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Unit Four Section A: Five Famous Symbols of American Culture warm- up activities: 1. What are the symbols of American Culture that you have heard about? 2. What can you imagine to be the reasons why the Statue of liberty was built?
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Unit 2 Sectiona Iron and the Effects of exercise arm-up Qu 1. Why do women often not have enough iron in their bodies? 2. If iron levels are low, what problems can women experience? 3. What can you eat to get enough iron in your daily meals?
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Unit 8 Section A Legal and moral Implications of Cloning Warm-up Questions 1. What do you know about cloning and genetic engineering? 2. Do you want to cloning yourself once human cloning becomes reality?
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Book two Unit 8 Section a Preview Should schools simply prepare students for a job? This is the focus of the following article According to the author, educational institutions face a difficult choice. Most young students only
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UNIT FOUR Section A Studying Abroad I. Background Information 1. Host family is the family that provides board and room, food etc. for overseas Ⅴ isitors or students 2. Christians are followers of Jesus with whom they have a personal relationship and whom they accept/receive into their lives
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