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什么因素影响同分异构体的熔点沸点? 片碱涨价的原因2011年片碱价格从2400现在涨到3200实在是难以叫人接受啊,请问涨价的原因是什么,价格最近会不会落? 登封哪里有卖化工原料的如片碱等 油价上涨,那个国家会地震~期待 明天地震后告诉我一声 碳原子的质子数和中子数可以有不同吗?就是：假如碳原子的质子数是6,中子数是7；那质子数是6,中子数是8这种情况有没有?（就是碳原子有好几种） 某厂锅炉房用煤量40t/d[A1] ,三班连续生产.煤的发热量平均5000kcal/kg [A2] (1cal=4.184J),空气过剩系数α=1.15,煤含硫量1.5%,灰分24%.如该厂采用的锅炉为手烧炉和采用离心旋风除尘,问该厂排放的烟气量 关于废电池的作文! 有关于废电池的作文 怎样进行锅炉燃烧节能? 让废旧电池回家作文 国际原油价上涨对我国经济的影响 国内油价上涨的几条新闻1,国内油价上涨趋势2,油价上涨带来的影响3,其他越多越好,每条新闻加5分 sh开头的英文名.比如Shane阿.之类越多越好.我想要男名.T..T.T真的 找一个X开头的英文姓氏 英语翻译顺便说一下这个女歌手还有她的其他作品! like dying in the sun That's Why You Go Away 那正是你为何不辞而别 Baby won't you tell me why there is sadness in your eyes 宝贝,你能否告诉我为何你的眼中充满忧郁和悲伤 I don't wanna say goodbye to you 我不想和你说 dying in the sun怎么翻译 谁有dying in the sun的歌词 带中文翻译 冬天房间里保暖,窗户如何密封密封?还要保证视线,美观 N/mm2怎么读 235N/mm2怎么读 解释一下有机中的脂肪化合物,芳香化合物的定义再举个例子 脂肪族与芳香族水性聚氨酯有何区别 甲、乙两个养鸡场,鸡总只数相等,甲养鸡场公鸡的只数是乙养鸡场母鸡的1/5,乙养鸡场公鸡只数是甲养鸡场母鸡只数的1/3,乙养鸡场母鸡只数是甲养鸡场母鸡只数的几分之几? 修改英语作文（初三I often learn English by keeping an English note book .It makes me memorize a lot of grammar and new words .Sometimes,I learn English by watching English-language movies.But it is a bad way for me .Because I think actors sp 初三的英语作文求修改呃,老师要检查作文啊,大家帮我改改吧.我一句一句的分开打,大家多指出点错啊英语不好,句子都是轻给里喜.一句一句凑上的.要求：简单介绍一下你认为最有用的发明（ 初三的英语作文,帮我修改一下Can you imagine life without water?Can you imagine that you can't wash clothes,clean the floor,cook and even drink one day?If you think the water on the earth won't be used up?Maybe you never noticed that the w 找人帮忙修改英语作文,初三的（上海）I Will Succeed 字数要求：60字以上开头已给：Everyone has difficulties in his life...1、When you are in trouble,what will you say to yourself?2、What will you do?(Give at least one exam 请大家帮我修改一下这篇英语作文（初三水平）An Unforgettable HelpI'll finish my study in junior middle school soon.【(接下来是我写的)But every time when I think of a girl,my heart will filled with pleasure①Once I took 新生代农民工面临的问题 2010中国农民工人数和新生代农民工人数 People in apartments like to sit here in hot weather.Where is it?不是翻译,是回答!