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乙酸能发生缩聚反应吗 1,2,3-三羟基和1,2,3-三羧基丙酸的缩聚物的结构简式最好把化学反应方程式也写出是1，3三羟基丙醇和1，3三羧基丙酸的聚合物的结构简式，并说明该物质的形状（网状还是链状等等） 最好写 乙酸和乙醇能缩聚反应同上 那乙二酸呢? 高二英语 3 Eliza remembers everything exactly as if it__yesterdayA was happening B happens C has happened D happened 急,根据所给的中文提示完成下列句子或句型转换.1.it is said that the lady was murdered by her husband.The lady is said ___ ___ ___ ___ by her husband.2.Mother always asked him to study hard and it helped him a lot.Mother always aske 1.But ( )I only had a couple of dollars,certainly not enough for a thanksgiving sinner for the man .A how B what C why D when为什么选B不选A?2.this is a very good chance for you .Once ( ),it will never be gotA lose B losing C lost D to lose 这 Ⅰ.单词拼写 1.My __________ (立即的) reaction was just disgust when I saw the rotten cat.2.The situation between the two countries seems to be getting more and more __________ (复杂的).3.Lang Lang is a __________ (有才能的) pianist.4.B 2010版药典, 怎样区分缩聚反应产物和加聚反应产物 怎么区别加聚反应和缩聚反应啊? 怎样区分加聚,缩聚反应的高分子产物 加聚反应与缩聚反应的区别是什么,举些例子加聚反应与缩聚反应的区别是什么 多举些例子 想知道加聚与缩聚的区别 谁能帮我解决这个数学题,懂英文的才行呀, 200分求一道数学题,求懂英文的高手If a projectile is fired from ground level with an initial velocity of ν ft/sec and at an angle of θ degrees with the horizontal,the range R of the projectile is given by the following formula.If ν = 9 炭和什么反应能生成碳酸 2005版中国药典与2010版中国药典有何不同 2010年版 中国药典分几部 请问2005中国药典中,医疗产品灭菌后细菌培养本来是7天出结果的,为何在2010中国 药典中改为14天出结果?为何产品灭菌后细菌培养的时间要延长了?这个时间是按什么来定的? 有了,给你一百分.想不想要100分? 怎样才能每次考100分 100分啊 一百分啊.给力 什么是水解缩聚反应 化学 C3H6O2能发生消去,加成,水解,缩聚反应的哪几种请分类论述,谢谢 异烟肼中游离肼的杂质检查方法05版和10版药典有何区别 检测方法一定要跟药典一样吗我所用药物,药典的检测方法用液相,那我做论文的时候用紫外可以吗? 急求2010药典异烟肼含量测定方法? 想考一百分,该怎么办? 肾上腺素中的特殊杂质是什么?药典采用什么方法对其进行检查? 怎么才可以考一百分? 文言文自相矛盾、五十步笑百步、寒号虫等五十六篇越短越好