设随机变量X~U(0，2),Y服从参数为1/2的指数分布，则E(2X+3XY-Y^2+1)等于什么

He ______(take)many photos in Beijing because of the lucky money he got是什么从句, you are lucky because only little people can succeed in the end怎样改错 首字母填空Students of the day are lucky because they live in a modern s______ The fox was so lucky,because it just missed ___(catch).说明原因 SOME OLD SOME TIME AND THINGS怎么样 Please drink some _____.A.pork B.melom C.orange D.oranges 洛水之神指什么? The world ____ Things never stay the same The world------.Things never stay the same.A is changingBchangedCwas changing Dwill change Things never stay the same.Stay怎么解释呢?有没有相关的例句呢, here are the photos that were taken in Beijingthat 不是单数名词吗?前面是photos 后面怎么就是that了 here are the photos in BEIJING A that were taken B which I took 这两个答案是否都对? 请各位帮忙翻译以下句子.谢谢了!加快业务发展,开展更广泛的合作与交流.感谢对中国茶叶的赞赏,期待下次的相会. 英语翻译Xie Jin's films influenced many people in the second half of the 20th century. 英语翻译罗马文化国家制度和法律的严谨对德国文化产生了深远的影响,德国人凡事都要有章可循,有法可依,普遍自觉遵守各种规章制度,诚实而不需要监督.在会计模式上偏重法律控制,在会计 有原诗,只要这句话的意思. he who gains time gains allthings的同义句 He who gains time gains everything.仲·为什么还要接个WHO谁能跟我详细讲下? gains time gains 英语翻译Chinese people are very good at gymnastics.Do you like gymnastis,Daming? yes,I do.But Chinese people are good at table tennis,too,and table tennis is more popular than gymnastics. I love gymnastics.I thank it's more exciting than tabl 请帮我翻译一下下列句子1.Daddy went home with a case in his hand.2.Inside the case was a second-hand violin for seven dollars.3.My daughter wants a violin so badly. 英语翻译1.我们的表演即将开始,请各位游客后退到红线外观看演出.2.请您在台阶下观看演出.3.请您稍微向后退一下.用英语怎么表达, 请各位帮忙翻译一下下面两个句子,谢谢.1. Critically analyse the tensions within the international legal system with respect to international legal personality and participation.2. To what extent should we be less impressed with the spe 我想知道迎龙是什么意思.,1988年2月10号到底是属什么..另外还有,一个宝宝骑着龙身上到底是什么意思., 刑龙是什么意思 如何把中文的IE变英文 有关辛亥革命的点评,2000字. 在长期股权投资中,何时用成本法,何时用权益法 长期股权投资.为什么具有共同控制和重大影响的就用权益法,其他的用成本法主要是想知道原因 用成本法核算长期股权投资,为什么却要在合并财务报表时改用权益法?和生活相关~口语化些.