冠海马

如何用交轨法求轨迹方程? 某服装厂生产一批校服,已知每2m的布料可做上衣的衣身3个或衣袖5只.现计划用132m这种布料生产这批校服（不考虑布料的损耗）,应怎样安排才能使做的衣服与衣袖恰好配套?（二元一次方程解 二又七分之一加2x=三又五分之一 一批布料共200米用来做校服,第一次用了四分之三,第二次用了余下的五分之三,这批布料还剩多少米?第一道求x，第二道是应用 Hi,Liu Fang.Is your English teacher___American or English?Oh,she comes from the USA.为什么不填,而不能填an? 一批衣料共240m做校服第一次用了3/4第2次用了余下的3/5还剩多少米 红杏校服厂生产一批校服,已知一件上衣衣身与两袖配套,做上衣衣身一件要8尺布,做一只袖管要2尺布.红杏校服厂生产一批校服,已知一件上衣衣身与两袖配套,做上衣衣身一件要8尺布,做一只袖 （一个字,）假设你在美国的朋友Amy病了,请你写一封电子邮件,并告诉她做如下事情：1.take more exercise.2.have more fruit and vegetables.3.get enough sleep.要求50词左右（是左右,不是以上!）,开头结尾已给 转魔方最快纪录是多少 十二阶魔方公式 英语.他在足球俱乐部.翻译这句介词要用什么? 海伦凯勒 外文书 The story of my life这个是海伦凯勒的自传?不是Three Days to See? 用适当的介词补全句子并翻译成汉语 1.I heard__my friend in England two days ago. 2.The party is__Mr Zhang,our favorite teacher. 3.She has a new idea__how to make a paper car. 4.__the end of this year,they will go back to their hometown the bank you want to find is _________the end of the road A in B on C by D at There is a bookshop_____the road. A.in the end of b.at the end of C..in the end d.at the end Happiness is found along the way--not at the end of the road.的意思 henry,the phone is ringing,Do you want me to go?NO,sit still,,A,I will get it B I am about to get it CI‘m getting it DI am about to get it选A啦, 求 意大利歌手Biagio Antonacci 2008年歌曲 Angela 歌词 以及 中文翻译 Biagio Antonacci - Quanto tempo e ancora意大利歌词翻译请问有哪位大大懂意大利语的,帮忙翻译下Biagio Antonacci - Quanto tempo e ancora这首歌.歌词原文non ci credevo, ho detto: "è lei o no?" tra tanti amici non ti aspettav 7camicie是意大利的品牌,中文翻译是什么 英语翻译英语翻译Sarah讨厌每天早起Sarah—— get up early every day ”活得精彩”怎么翻译?如果我想用make every day ...请问最后一个词该填什么? 翻译：早起是有好处的:_good_ _ _early. Always wear a ring that she not see the hands of 英语连词成句 have postcard I and from my got a it's friend it 英语翻译这句英文翻译成中文是什么? the day when "I" and "you" become "WE" 谁能帮忙翻译My ideal is to strive for the things you want to,efforts are being made in i have got a postcard form my pen friend .there is a beautiful [ ]on it 英语翻译或者是“人生最幸福的事情,莫过于就是胸怀梦想,并为之努力奋斗.”大概这个意思,网上有“世间最快乐事,莫过于为理想奋斗.世间最幸福事,莫过于为爱人奋斗.The most happy,it is hard for the story of my life是哪部名著的名字 To strive to seek to find but not to yield! To strive to seek ,to find ,and not to yield 啥意思