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请完成下列Java程序。程序的功能是利用迭代法求一个数的平方根(求平方根的迭代公式为：Xn+1=1/2(Xn+a/Xn))。 注意：请勿改动main()主方法和其他已有的语句内容，仅在下划线处填入适当的语句。 public class PingFangGen{ public static void main(String args[ ]){ System.out.println(Math.sqrt(2.0)); } static double sqrt(__________________){ double x=1.0; do { ____________________ } while( Math.abs(x*x-a)/a＞le-6); return x; } }
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Most dictionaries will tell you a number of (21) about a language. There are three things in particular that (22) important. These three things are spelling, pronunciation, and meanings. The first and most obvious thing is that a dictionary will (23) you the spelling of a word. If you’ re not sure about the spelling of a word, you can try to find the correct spelling in a dictionary. Words are listed in alphabetical order--a, b, c, and so on .For example, on a dictionary page the word "poor" p, o, o, r--comes before "poverty"--p, o, v, e, r, t, y and the word "poverty" comes (24) the word "power’--p, o, w, e, r. The words are always given in alphabetical Order. The second thing a dictionary will tell you is (25) . Most dictionaries give the pronunciation of a word in a special kind of alphabet. This special alphabet is called a phonetic, or sound alphabet. The phonetic spelling will tell you generally (26) a word is pronounced. There are a few different phonetic alphabets. Many dictionaries use the International Phonetic Alphabet to show pronunciation. The (27) thing a dictionary will tell you is the meanings of words. You can (28) a word and find out what it means. Many words have more than one meaning, and a good dictionary will ex plain all of the word’ s meanings. For example, in English the common word" get" has over 20 different meanings. The meaning, of course, (29) the sentence in which the word’ is used. These three things--spelling, pronunciation, and meanings--are some of the important (30) that you learn from dictionaries. 30（）
某物流公司是国家AAAA级综合服务型物流企业，主要承担国内公路零担运输业务。 该公司于2007年建立了公司网站，最初网站的用途为对外发布信息的窗口、宣传企业形象、沟通企业与外部的联系等。随着业务发展的需要，公司网站逐渐转变成公司营销的一个平台，并且发挥了巨大的作用并收到了良好的效果。 该公司对于网络方面的应用主要的目的是促进市场的销售量。首先，分析影响销售的因素，这些因素包括品牌形象、实力地位、客户关系、推广策略等。在转变过程中，技术人员加强网站页面的设计，要求达到“简洁大气，清晰明了”的效果，同时将重点内容突出在页面上，如将货物追踪模块设置在最醒目的位置，设置产品与业务、网上自助服务的模块，方便用于了解该公司业务并进行快速的操作。 针对这些情况，请回答： 如果你是该公司选中的高级业务经理，请你对现行网络开发客户模式加以改进，并提出注意事项．
某物流公司准备进行一次竞标，公司任命你为此次竞标组的一员，接到这样的通知，你踌躇满志，欣喜激动之余头脑中不禁又预先勾勒了一遍竞标的流程，思忖在哪些环节突出公司的优势。请说出竞标的一般流程。
葡萄胎组织侵入子宫肌层或转移至子宫以外者为
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