如果燃烧干木柴跟跟燃烧煤油放出的热量相等,干木材的质量应该等于煤油质量的几倍?请列出相关算是说明理由

春节除了放鞭炮啊,吃饺子啊,过元宵节啊,还有什么?我现在在做一张手抄报,不要给我一大堆文章,要有一小段的说明! 阅读《二十一世纪中学生英语报》对我们来说非常重要用英语怎么说 It`s _for us _ _21st Century Teens 英语翻译基于同样的原因,我也喜欢中国动作片.（）　（）　（）　（）,（） （） （） （） （） （）喝水不会使你发胖drinking water can't （）（）（）　（） 英语翻译 英语翻译cartridge housing one fixed drilling unit including 5 drills which do process for cartridge housing.在这句话中 cartridge housing 记住是机械类英语，是指单向阀还是轴承壳呢？或者还有其他的意思吗？ 英语翻译The influence of the manufacturing strategy onthe production of molds and dies 英语翻译Base coata),with silicate intermediate layer,black top coat,and integrated lubricant.Use:General components and metric threaded parts with requirements for definedsliding properties. Here's a photo of_____family for you.May I have one of_____? Here's a photo of_____family for you.May I have one of_____?A.my yoursB.yours mine Look!I have a photo of ___ family.Do you have one of ___?Of course.A.my your B.my yours C.my you Here is a photo of ___ family.May I have____?A.your;my B.my;your C.my;yours D.yours;mine Here is a photo of my family.的中文翻译 英语翻译“国家批准修建运行速度达200公里以上的高速铁路计划” I like to have my photo taken _____there are mountains and rivera.thereb.in whichc when d where I like to have my photos taken ____ there are mountains .A there B when C where D in which选C （D?） the visitor asked to have his picture taken _stood the famous tower.A.whatever B.at which C.The place where D.where willam please remember to the photo taken in canadahere when you come to school tomorrow i'd like to——William ,piease remember to ____the photo taken in Canada here when you come to school tomorrow .I'd like to have a look.___OK.i'll introduce so 有没有和fire fly一样好听的英文歌曲 Which photo has been taken? get your picture taken是给你拍照的意思吗 Photo taken on Aug.6,2011 shows ...请问Photo taken on 用了什么语法?麻烦说的详细点, 谁能帮忙翻译一下fire fly的歌词. 定积分 积分限0~π/2 (cosa/cosa+sina)da 急求∫(sina*sina)/(1+Ksina)da的积分, 新浪博客积分怎么算的RT 中国在新加坡的北部用英语怎么说 “中国南部”“中国北部”“华北”“华南”分别用英语怎么说 英语翻译. 谁能给我“Fire fly”的全文翻译 已知tana=3 求根号下（sin^4a-3sinacos^3a+cos^4a） 若角θ的终边过点P(4a,-3a),(a≠0),求sinθ和cosθ的值 若角θ的终边经过点P（4a,-3a)(a≠0),求sinθ和cosθ的值