逻辑a或b有几种情况

往含有2.67gAlCl3的溶液中加 入含有2.8gNaOH的溶液,求反应后 沉淀的质量?5描述:AlCl3能与NaOH反应生成 Al（OH）3沉淀,过量的NaOH又能 与Al （OH）3反应生成能溶于水的 NaAlO2 The net closely,but buckle not forever. the net closely,but buckle not forever. The.net.closely.not.with.You.to.Let.go! 假如白天突然中断了二氧化碳的供应,叶绿体首先积累起来的物质是什么 某AgNO3溶液4g与Nacl溶液起反应,生成了0.5gAgcl沉淀.计算该AgNO3溶液中AgNO3的质量分数. (2/2)沉淀的质量与CaCl2溶液的质量存在关系 原CaCl2溶液中的质量分数是多少?（写出计算过程） 20克质量分数是20%的MaOH溶液,恰好跟80克CuSO4溶液完全反应.计算：（1）可生成沉淀多少克?(2)CuSO4溶液中溶质质量分数是多少? Deep through the net Cleansing all you need to supply are the pirates!4211 . .,the well know china advocate of anti-global movement. 翻译下xx人,the well know china advocate of anti-global movement. 翻译.我们提倡理性消费,用advocate好不拉 0 0 为什么生成了氢氧化铜沉淀后,溶液质量变小是氢氧化钠和硫酸铜溶液 一个有着一艘漂亮的船的船长 英语怎么说、 日本在什么时候放了中国船长?用英语怎么说? I really don't know if I can borrow the book in __A the library of the school B the school's libraryc the library of schools d the school library 答案选最后一个, The woman is s ______the street early in the morning .They don't know the book.I don't know it,e___ 破丝的英语怎么写 一点点英语语法问题~肯定so easy~Tom and Ken (are )brothers?是填“are”吗?还是“is”?Look!Who is ( )kites?括号里填flying,fly,doing还是do? 小学教育督导论文 小学教育论文怎么写,求几篇这方面的范文 The life we are used to (chang)since 2000 有些下载方式是种子连接,怎么下载? 求破几道英语选择题1.____ suggestions you make,he will turn a deaf ear to them.[A] What [B] Whatever [C] Which [D] However 2.Frank gambled his money away ____ Jane spent hers all on dresses.[A] for [B] so [C] while [D] so that 3.____ wins the Acute hearing helps most animals sense the approach of thunderstorms long before people___.A、do B、hear C、do them D、hearing it 为什么不选D?我感觉前后应该平行才能符合平行原则啊 when will you go back to your hometown?A、Until the work is finished B、Not until the work is finishedC、After the work will be finished D、As soon as the work will be finished 作者明确太和殿\“高28米,面积2380多平方米\”的作用是为了说明什么? 英语关于Being的相关形式YOU ARE BEING KIND.BEING在这里是什么作用,并拜托列举一下剩余常见的的其他形式 talk about the main components of a computer and their functions. Please discuss the main functions as well as definitions and differences of HTML,XML,XSL,and XHT The Main Functions of Nespapers的意思 1、请问it's on the corner of main and first avenue.为什么要加main?在转角处主要的第一大街,好不通顺啊!2、on the corner of main and first?在转角处的主要和第一?