椭圆极坐标下二重积分

如何评价国民党政府在抗日战争中的作用和地位正反两方面评价,最好有数据对比和历史资料 升降机最多能用多少年, We'll have great fun_(learn)English _(not driver)so fast,please I speak Chinese_(good)适当形式填空English后加句号，please后加句号 有关＂笑＂的四字词语,有哪些? 以“四”开头的四字词语有哪些急快!o_O 国民党与抗日的正面战场其中有战略方御和相持阶段,分别是什么意思? 建立了抗日民族统一战线,为什么国民党又“防共限共溶共反共”? 向日葵有么什么特点 电梯二线品牌?电梯二线品牌有哪些?国内哪些电梯二线品牌比较好?帮忙推荐几家电梯二线品牌,公司要求我查找一些关于电梯二线品牌的信息,本人菜鸟,对电梯品牌不了解,求大神帮忙推荐一些 “打雷”粤语怎么讲? 打雷粤语点讲打雷还是得得得 向日葵的品质描写 公司名字是“唐皇” 翻译成一个单词的英文名 能谐音唐皇 又有寓意 公司主营医疗器械 向日葵的精神品质 四字成语 太阳花 品德代表的名人 打雷闪电时可以用电脑吗 He did not tell his parents he was going home because he wanted to give them a ( ）．A：joy B：surprise C：shock D：happiness我英语老师说b是错误的，why?要写因为！ she hurried home to tell them the news. she got home to tell them the news ___ ___ ___ Could you tell me ( She was invited to her birthday partyat her home.C.where Tina lives D.where Tina lived 答案为什么选C呢 还有这道题目意思我不大明白问住在哪前后文不搭啊 Tell Helen,if she is at home,that i will come to see her.为什么这句中要加that? Viva可以做英文名字吗?如题 英文名字 男孩 我的孩子叫弘文,应该用什么英文名比较适合呢? 男孩子用什么英文名好?东州的英文名字 We have fun ( )[speak] English after classWe have fun ( ) English after class.括号内怎么填啊```(选项)A.sreak B.speaks C.speaking D.to speak At the ____(begin) of our class,we sing a song in English.They have fun ____(learn)English.They have no place ____(live) in.中国是一个历史悠久的大国：China is a great ____ ____ a long _____.There is a big house _____ （介词）a small 男孩子用什么英文名好?嘉熙的英文名字 We have fun___（sing)English songs in the music class.用所给单词的适当形式填空. 谁知道太阳花的特征? Kate's father__ her very much because she __ himA is like;likeB likes;is likeC likes;is alikeD is alike;likes ____Kate .She's English Kate is proud of h___ because she won the first prize in the English competi kate likes music because she thanks it's fun（对because she thanks it's fun提问） __________ ______