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县级以上地方人民政府及其有关部门应当确定适合残疾人生产、经营的产品、项目，优先安排残疾人福利性单位生产或者经营，并根据残疾人福利性单位的生产特点确定某些产品由其专产。
对于用户使用数据库中数据而言，SQL定义了6种不同类型的权限，其中不用于表和视图的权限是（）。
某女27岁， 龋坏，治疗后取模做冠修复 做可卸代型，为提高工作模型表面强度，保护颈缘线，在模型颈缘处涂布（）
《图画见闻志》的作者是（）时期理论家（）。
由于城市热岛效应，城市和郊外温度差异最大出现在：（）。
不得使用未采取密码保护的通信系统传输涉密信息。
高处作业工程模板安装，作业高度在（）及以上时就按照高处作业安全技术规范的要求进行操作和防护。
Practice 3 阅读下面的对话，根据其内容写一篇有关paper用途的说明文。 要求： 1. 所写短文应与对话相关内容意义相符，涵盖其要点； 2. 用你自己的语言表达，可改写对话中的句子，但不可照抄原句。 注意： 1. 词数80词左右，开头已为你写好； 2. 请将短文直接写在答题卡上。 Marry: Last time we talked about the history of paper. But do you know what paper is used for? Peter: Oh, that’s an easy question. Paper is used for newspapers, books, writing paper, envelopes, wrapping paper, paper bags... Peter: Yes, actually only half of the paper that is made is used for such purposes. Have you got an idea about other uses of paper? Marry: No, I’m afraid not. Peter: There are many other uses. Paper is very good for keeping you warm. Houses are often insulated（使绝缘；使隔热） with paper. You have perhaps seen homeless people asleep on a large number of newspapers. Marry: Yes, I have. So they are insulating themselves against cold. Peter: You are right. In Finland, it is very cold in winter. It is sometimes 40 degrees Centigrade below zero. The farmers wear paper boots in the snow. Nothing could be warmer. Marry: Oh, that’s unbelievable. Peter: Now more and more things are made of paper. We have had paper plates, cups and dishes for a long time. But now we hear that chairs, tables, and even beds can be made of paper. Marry: Fascinating! Peter: People have made paper boats, but they have not yet made paper planes or cars. Just wait, they probably will. Marry: Well, you have become an expert on paper. How do you know all that? Peter: You know. I’m preparing for a presentation, so I’ve looked up a lot of material. Marry: Well, I’m sure your presentation will go really well. Peter: Thank you. More and more things are made of paper.
月食
假定一个超链从一个万维网文档链接到另一个万维网文档时，由于万维网文档上出现了差错而使得超链指向一个无效的计算机名字。这时浏览器将向用户报告什么？
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