钥匙链筷子和碗 有什么意义筷子和碗的一对钥匙链代表什么

保护层也不是绝对能够保证铁不生锈的啊.
既然是保护层,那么镀上的金属应该是活性比铁高的.但是,当保护层小部分剥落,会漏出下层的铁,铁在空气和水分的存在条件下会自发发生自身的氧化反应（虽然这时电化学的保护占主导）生成铁锈.铁锈有“感染”行为,一处产生便开始扩散,遂开始加速生锈.
如果只是一般的油漆保护层,那么铁锈蔓延得更快,铁损耗也更厉害.
万事都没有绝对的保险,涂了保护层只是减弱腐蚀,不可能杜绝腐蚀的.

棒球一窍不通 拿那5个下手了
They may not necessory but certainly practical and easy-to-use in one's life.
First,I'd like to say that sunglasses is my favorite.There are various styles in my storage bag and most of them are usually economical because I can not afford "GFFERRE".They protect my eyesight well.
Speaking of leather belt,I think it has more decorative function than its practicality in modern society.Don't you think so?Its traditional significance has altered.
The following is wrist-watch,which has been one of most important essentials and tells us the accurate time.It's still irreplaceable although more and more people learn time from mobiles.
Key chain is often well-liked among girls than boys because of its lovely shape and fashionable design.Of course,it's also practical.
The last one is MP3 that has been very popular with young people.It possesses quite a few advantages,such as small-size to carry,various shapes and powerful functions in learning,listening music and almost as a U-disk for data storage.

一
1.The sunglasses is my favorite.
2.An orange scarf
3.His father's wallet
4.A new key chain
5.A brown leather belt
二
1.soap 2.Sandals 3.wallet 4.skirt
三
1.has nothing 2.What think of 3.There is nothing 4.asked thought 5.How like
你好都打错了!

Today,the object I bring with me is a key chain.Although it appears to be quite a common object,it has a very particular meaning to me.Up to today,I have owned this for ten years.So why is it so peculiar to me?I want to tell all of you a story.When I was ten years ago,my mother gave it to me so that I could bring it with me to school.She said to me,"From today onwards,no one will take you to school.You have to go to school by yourself because you should learn to be independent now.You should solve any difficulties by yourself.Despite my unwillingness,I go to school alone.From the day onwards,this key is a symbol to me.Whenever I look at it,I remember what my mother said to me and I am no longer afraid of facing difficulties.I carried it with me throughout my primary,junior and high school days.It also accompanied me to many cities like Shanghai and Guangzhou.It is particular to me because it is not such a particular object.

我也可以很负责的告诉你,没有这个单词.
你是在参考书上看到的吗?也许是它印错了呢?这种事经常都有的.我估计可能是多了一个r,或者少了一个i,their是"他们的"的意思,你联系上下问看看是这个意思吗?
原来是这样哦,我觉得那应该是买什么衣服的时候送的吧,因为有一个衣服的品牌就是这个单词,不信去这个网页看看,问问你的朋友是这样吗?

2个钥匙放入的总可能性有
6*7种 （6个间隔,然后7个间隔）
第一个钥匙放入的任意一个位置,都会产生2个间隔是和自己相邻的
所以 相邻的可能性有 6*2种
答案是 (6*2)/(6*7)=2/7