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是不是除烃其他有机物都含氧 有abcd四种有机物,已知:ab为烃,cd为含氧衍生物.(1)1mola完全燃烧生成2,mol二氧化.(1)1mol a完全燃烧生成2,mol二氧化和2mol水（2）在标准状况下2.24L b恰好与32g溴完全反应，经测定产物分子中每个碳原 Not only the story is interesting to us but also the English is good for us 怎么不倒装啊e 我想知道的是 not only放句首为什么没有倒装···· is__good at maths,___interested in English as well.A.both:and B.not only:but alsoC.neither;nor D.either;or为什么选D 请问还有的电机只有3个接线柱是为什么? 九个接线柱的电动机是怎么回事 我的电机是60V直流的 4个接线柱怎样接正倒开关 开关上有9个接线柱 你对中国了解多少?how much do you know about China?（为什么要用hou much问,而不是hou many） 硫酸铜变铜的方程式 硫酸铜和氢氧化钡方程式 Father's,American,new,the,car,corner,the,is,street,black,at,Tom's 连词成句急,希望在给答案同时说一下这样写的原因.写原因的我追加分 ________ car is new.A Mike's father B Mike's father's C Mike father's D Mike father 什么是有机硫化物? 1.6克硫和6.4克铜反应能得到8.0克纯净硫化物么? 阅读理解many young people in china know about celine dionMany young people in China know about Celine Dion 席琳·迪翁the famous French Canadian pop singer.She sang the song “ My heart will go on” for the movie Tita 什么是活性硫化物和非活性硫化物. 9.He ___________much about Chinese.(not know) 动词过去式!10.She’ll go to see her grandmother if it _____________( not rain). 硫化物是什么物质 Tom studies science very hard.(改为一般疑问句)_____Tom______science very hard?I am late for school because my bike is broken .(就画线部分提问)(because my bike is broken画线)______ ______you late for school?讲明原因,请说清楚这 改错 1.How did you came here?2.He doesn‘t are English.3.Tom shoes are very beautiful.4.Did you washed your clothes by yourself.5.How many day are these in a week? These snacks are his.（用Tom改为选择疑问句 I didn go to school yesterday because I was ill (就because I was ill提问) 我认为你儿子长得像你.翻译用take after 什么叫还原性,氧化性,请举例子 具有氧化性（或还原性）的物质浓度越大,其氧化性（或还原性）越强,举个例子 利用物质氧化性 还原性的具体例子 Dear tom.Thank you very much for your help duriDear tom.Thank you very much for your help during my business trip.As you know.I was quite worri edabout my garden ,and your considerate and careful treat to it has made it more beautiful than ever befor 我想问下job与work的不同就这个! 敷衍的承诺(用英语怎么说?) 英语翻译 你应该利用这好天气洗衣服（take advantage of) 这些单词怎么读?例：blue蓝色读：不路 以下单词都用这种方式：eraser橡皮 case箱 mother妈妈 翻译：你们可以利用这几天的好天气在上海到处观光（take advantage of）