release letter什么意思

release letter

同意释款书

例句及用法

1、I dont think they will write a release letter for me.

我想他们不会给我开具解约合同的。

2、 The government did not release the text of the letter.

政府并没有公布信函的具体内容。

3、 Some also urge those who understand Arabia to draft a thanks letter and release it to your website.

还有人强烈呼吁懂阿拉伯语的人写感谢信，然后发到您国的论坛去。

4、The rules on when a student can be granted a letter of release have also changed.

移民局的操作手册里有对这类事情的范围规定。

工业上处理含Cr2O72重铬酸根离子的废水采用以下方法：

2Cl- - 2e = Cl2 Fe - 2e = Fe2+ 如果，Cl-还原了Cr2O7 2-，那就必然生成Cl2，生成的Cl2还要氧化铁电极的！于是有Fe+Cl2=FeCl2，这样Cl-又返回溶液中了，就是催化剂的角色了。 还是要分析电极周围的情况：电流从正极流向负极，电流是所谓的正电荷，而与正电荷相反，在电池外部，电子是从负极流向正极的。 铁负极：负电压，电子多，还原反应，周围聚集Na+和H2O(Fe2+和Fe3+后来才有的)等溶剂分子和阳离子； 铁正极：正电压，需要电子，氧化反应，周围聚集H2O和Cl-还有Cr2O7(2-)等溶剂和负离子（OH-后来才有的）。但很遗憾，电极是铁做的，铁可以被氧化，提供电子。 这时反应开始了： 铁负极：2H2O + 2e = H2 + 2OH- 氢气冒出，生成的OH-向铁正极跑去。 铁正极：Fe - 2e = Fe2+ Fe2+进到溶液中，遇到了Cr2O7(2-)，被氧化成了Fe3+，同时产生Cr3+，二者是阳离子，向铁负极跑去，半路上遇到OH-，二者都形成沉淀。

可见和Cl-没有关系。 。

用英文写一封感谢信

Dear Xiao Ming,Thank so much for your kind treatment during my visit to Hangzhou last week. You are really a wonderful tourism guide. I had a good time and took lots of amazing pictures. I'd like to invite you over to our place next week. Check your schedule and let me know if that works for you.Sincerely,xxx...

能帮我写篇英文作文吗

Dear David, How time flies! How are you going these days? First, thank you for your inviting me to your house to have supper, you are such a warm foreign teacher that I haven't seen yet before. You told a lot of Western costoms and habbits when we had supper, I felt I have learned a lot from your speaking. Second, I will say sorry to you about what I did that day. I dropped a glass onto the floor carelessly. Please forgive my mistake. The last, by the way, I want to tell you that my home have moved to a new place, 58 at Jiefang Road, welcome to my home when you are free. That's all. All the best! Yours sincerely, Li Hua