2016数据库的作业

初一课文《蝉》《贝壳》《紫藤萝瀑布》给你的启示三个课文中随便选一首.400字 已知向量OA等于向量p,向量OB等于向量q,OC等于向量r,且下来AB等于2倍向量BC,试用向量p.q表示向量r? 如图,已知向量OA的模=2,向量OB的模=1,向量OC的模=4.,向量OA与OB的夹角为120度,向量OA与OC的夹角为30度,用向量OA,OB表示向量OC 如图,已知向量AB=λ向量AC,请用向量OA,向量OB表示向量OC kids will study on computers at home①如果这个句子的kids变成a kid,computers是不是要变成computer?②on computers和at home是不是可以调换位置? 要一片400字的我的心愿为题的作文,要和职业有关的,最好是房屋建筑师 求几首好听的英文歌,和DJ 找几首好听的DJ或者英文歌节奏要动感,悲歌也行,关键是好听. Translate the following sentences into Chinese.1. In many respects international trade is no different from domestic trade.2. If the American offered dollars in payment for the car, the auto manufacturer would be stuck with money that no small Japane Translate the following sentences into Chinese翻译中文 英语翻译3.Users desire information about the performance of a specific entity.If information is mixed between two or more entities,its usefulness decreases.4.The revenue recognition principle gives preparers guidelines on when to recognize (recor study,the,home,future,will,everyone,at in .(连词成句） 您好,请问x的二次方+3xy-4y的二次方 用十字相乘怎么解? 英语翻译5.The three basic forms of business organization are sole proprietorships,partnerships,and corporations.6.Owners of corporations are called shareholders (or stockholders).Corporate ownership is divided into units called shares (or stock). 2m的二次方+m-3 十字相乘 若2的x次方=3,4的y次方=5,则2的x-4y次方= A personal computer is something kids will use study at home句子改错有一处错误 The kids use computers( )(study)at home. kids won't go to school,They'll study at home on computers 一般疑问句和肯定句 寻找一首象DJ的英文歌一男一女唱的 A personal computer is something kids will use study at home.改错 look forward to 是什么词性?动词 还是 介词 look forward to是什么词性,形容词还是什么 look forward to 中各个词是什么词性希望高手解答 look forward to后面加什么词性的词做什么语 请问to在引导动词不定式时是什么词性?look forward to 里面to又是什么请问to在引导动词不定式时是什么词性?look forward to 里面to又是什么词性呢? If it_(rain)tomorrow,I will stay at home.用括号的适当词填空 if it rains tomorrow,i will stay at home和if it rained,i would stay at home意思和用法有什么不同if it rains tomorrow,i will stay at home和if it rained tomorrow,i would stay at home强调的意思和用法有什么不同,请再对比举例 I think staying at home is really boring 中stay为什么要加ing? look forward to 与 look forward for 区别,比如：I am looking forward （ ） it. 关于look forward to 的选择题!the letter I had been looking forward to ______ last Sunday.A. arriving B. arrive C. arrived大家帮看看选 什么!?为什么答案给的是C? be similar to的同义词,是take after还是look like