氯化铝和氢氧化钠

可变光衰减器 ------the room 填go into 或enter into 它们有什么区别 step into,go into,enter三者有什么区别?He stepped into the office He went into the office He entered the office 冰心的繁星第十段有什么含义 冰心的著作（繁星）的第一首的含义是什么? 请问冰心写的繁星第1段啥意思?急 第一段表达的是什么意思 音标怎么写或怎么念 谁有cocoon《oh my god》的歌词.读啊答对 千锤万凿出深山,烈火焚烧若等闲.粉身碎骨浑不怕,要留清白在人间.猜一建筑材料（ ）一朵芙蓉顶上栽,彩衣不用剪刀裁.平生不敢轻言语,一唱千门万户开.猜一动物（ ）急,马上要用! enter into可否译为"进入" I can go to Hangzhou by train.对by train提问 I am visiting the Beijing zoo next month改为疑问句 enter 与enter into 有什么区别 enter 和 enter into 的区别在网上下载了一个商务英语900句,发现里面有个句子有两个版本：in order to extend our export business to your country,we wish to enter direct business relations with you.in order to extend our expor Do you know how to go to Beijing?可不可以说：Do you know how you will/can go to Beijing? How can you get to Beijing?怎么答是不是用“I get there by...”要用完整的句子。 If my girlfriend is japanese,how can i face to my chinese friend,and my family?I'm a chinese.So i alaways can't face to myself.When i think about the history,i will feel very angry,because my grandfather and grandmother were died from japanese at the Lingling is my chinese friend 改为一般疑问句 已知蛋白质N端序列,要想扩增其全基因,怎样设计引物?从5'端or3‘端如果N端序列为TNTPE请问下上游引物应为ACN AAY ACN CCN GAR 还是TGNTTRTGNGGNCTY? talk,my,with,Damon,friend,Chinese,to,others,me,in,advised连词成句 you belong with me 中文音译就是音译过来的呢种、我超想学、 you belong with me歌词的中文意思 Now I can talk with them in Chinese.But I can't very well pBI121是表达载体还是克隆载体 初一英语：根据表格内容,写短文介绍一下Jim Green的收藏.根据表格内容,写短文介绍一下Jim Green的收藏.Number 3 6 5 6 Things Baseball Baskteball T 这首歌叫什么 是一个外国人唱的 只说话但是好听全是说话 雷打什么喔 立即什么谁 但是他说的是英文 克隆载体可以一直扩大培养吗?我的意思是表达载体可以转化到细菌里面保存,可以一直保存着用.那克隆载体是不是也可以直接转化到细菌里扩大培养?这样只要买一次,以后是不是就不用再买 双链cDNA在表达载体上可以表达吗 daming is my good friend.求填空在“建构和谐校园”的活动中,大明被评为“文明之星”,你是他的好朋友,请用最简短的英语对他进行介绍,并写一句你最想对他说的话.Daming is my good ___.He is quiet friend My school day begins at 7:30a.m 对at 7:30a.m 提问 ____ ___ ____ ____school day___ ?拜托哦!在线等. 一直搞不懂到底用哪个... 对括号部分提问：We got to school （at 7：45 ）this morning. I will Be Missing You 的中文歌词是什么?