A为n阶方阵,且A² = A (这类矩阵称为幂等矩阵),求证r ( A ) + r ( A - E

Our art teacher is _Mr_ Deng_对划线部分提问 she has just aired the room这句是不是“她刚刚打扫房间”而其中aired是什么意思?是打扫? 这句英语有错吗?I love you deeply forever! He might not know___(someone)at the party. #高考提分#He might know anyone at the party.这句话是对的吗?如果是对的,为什么用anyone而不用someone 英语翻译Ogni notte in sogno,Ti vedo,ti sento,E cosi io so che ci sei.Tu,da spazi immensi,Da grandi distanze,Sei venuta e so che ci sei.Qui,la,dovunque sarai,Sento forte il mio cuore che va.Ancor la porta aprirai,Per entrar nel mio cuore,E il cuor 英语翻译Lo sai,tu mi hai messo nei guaii miei occhi sono isole dove non viaggi maibravoforse più di mea ingannarmi senza mascheraed io a fidarmi di teCoro:E’ durato un flashio mi ero illusa di noima con l’istinto di una donna oggi so chi sei 英语翻译quindi questo va a voi mi dispiace,perch茅 i morgan succhiare la vita su larga scala e si couldnt acquistare merda per il tuo compleanno mi dispiace ma so succhiare uno giorno spero di essere in grado di fare le cose che voglio fare in m male high school students are more likely than their female counterparts 相对应的人2)______ advanced math courses like calculus2. A. in tackling　　　　B. tacklingC. to tackle　　　　　D. about tackling选c 为什么? 岁寒三友的故事越多越好,越精练越好,故事! 岁寒三友的故事四句一首急用今天 岁寒三友的故事3个 急 是故事 Sexyback 歌手名:贾斯汀 专辑名:Sexyback中的Sexyback是什么意思啊 贾斯汀的sexyback的MV演的是什么故事? sexyback 怎么翻译成中文? how can you tell male and female lions apart?就是这个问题,讲狮子旳.帮我答一下,不是翻译，是回答 ARE LIBRARY AND THE CLINIC SMALLER THAN THE OLD ONE(还是ONES)?NO THEY'RE MUCH BIG.(还是MUCH BIGGER ( )students are going to join the movie club.A.( )students are going to join the movie club.A.Much B.A lot C.Lots of.D.A little 请老师解释, Half the class____(join)my birthday.动词应填单数的还是复数的 my favorite book英语作文80以上字数 1简要介绍你喜欢的一本书 2喜欢它的理由 3你从中学到了什么 Mrs Smith and her twins ___the dancing club.a is going to join b are going to join如上. We___our breakfast when an old man came to the door. A. just have had B. have just had C. just had D.had just had by the time不是用将来完成时? We _____ [have] our breakfast when suddenly an old man came to the door 这空因添什么 请说明原因谢谢 We _ our breakfast when the old woman came to the door A;just habe had B;had iust had C;just hadD;have just had 使用face time拨号跳face time无法使用是什么原因 需要注册使用face time和twitter,不只要如何越狱啊?需要注册使用face time和twitter,不只要如何越狱啊?我是菜鸟,从来没越狱过,请高手教教我,我问的是用电脑，不是手机， hue是什么意思 英语翻译I'm bringing sexy back Them other boys don't know how to act I think it's special what's behind your back So turn around and I'll pick up the slack Take it to the bridge Dirty babe You see these shackles baby I'm your slave I'll let you w 诚心求JT的sexyback的伴奏 高分 满意的再加有的发到这里好了 525747381@qq.com实在不行就麻烦给我发那个完全没有声音的instrumental版本 我自己从原版剪出rap配音再贴如果有哪位有完整伴奏 通俗点 There is not a simple answer there is no simple answer,( )is oftenthe cathere is no simple answer,( )is oftenthe case in science.a.in which case b.in that case c.in what case d.in whose case 英语单选求详细分析 Go and ( )me when you have time.A,lookB,look atC,seeD,see for应该选哪个,为什么?