异或门电路逻辑代数式

has been和have been区别 Are these _______.A.yours pens B.pens yours C.yours pen D.your pen选择题 如题 已知数列an的通项公式为an=n的三次方,其前n项和为Sn,问是否存在常数abc,使等式Sn=an四次方+bn三次方+cn平方对任意n∈N+都成立? 英语翻译Bless me with the leaf off of the treeOn it I'll see the freedom rainWe are falling.The night is callingTears inside me calm me downMidnight calling mist of resolvingCrown me,with the Pure green leafPraise to my father Bless by the water 英语翻译各种that,哭了.The emergence of computationally-enabled sensors and the applicationsthat use sensor data introduces the need for a software infrastructuredesigned specifically to enable the rapid development and deploymentof applicatio "“五岳归来不看山,黄山归来不看岳””怎样翻译成英文? 五岳归来不看山 黄山归来不看岳 英语怎么说 听说PETS全国公共英语三的证书可以抵大四的证书,真的吗?如果去面试,公司认可PETS3的证书伐 I can't____my pen.where is it?I can't find my pen.where is it? Where is my pen?It's_________(那边) Where is my pen?It's ( ) 空格处填啥? where is my pen和where are my pen有什么区别? 公共英语PETS,用人单位认这个吗 什么样的单位认可度高些 PETS在可以被各类单位的认可吗? -where is my pen.It's not ___I have left it.-Maybe someone has mistaken it.A.there B.where C.here D.place where选哪个?要详解. The man is easy to deal with ______ (introduce) a person to others is very difficult for a shy man like T______ (introduce)a person to others is very difficult for a shy man like Tom.这种题什么时候用doing什么时候用to do. He has received your letter,He received it three doys ago I would like to teply ( ) your letter in three days We should help him to write letters（改为同义句） ,come to see you,after we can still be friends?Later may have little to! Love a person is very difficult语法有错吗 Loves a person original good difficult, gives up a person is very difficult帮我翻译下!谢谢了! 今天8月30日四川攀枝花地震,请问国家地震局如何预震,几级以上的地震是危险警告,如何告知预防? 他们认为英语是最有趣的学科用英语翻译 Be more careful!Don't make any ___(mistake) in your writing. 攀枝花以后还会不会有地震 ,会不会有危险 请用more difficult、more exciting、more careful、more interesting、more……………………………………………………………………………………………………………………………………造十组句子!如上 攀枝花还会地震吗?我想知道攀枝花还会有地震吗6级以上的! 近期攀枝花市还会发生几级地震? I like go swimming in summer,请划出句子中错误的地方请找出以下句子中错误的地方!I like go swimming in summerJeff wants to play in a band.There is no bookshops near my school.My books is my most precious things.We often listen mu