同学会送老师什么礼物好

在一个密闭容器中进行如下反应在一个密闭容器中发生如下反应：2SO2 ＋O2 →← 2SO3,反应过程中某一时刻SO2 ,SO3 ,O2的浓度分别为0.2mol/L,0.2mol/L,0.1mol/L,当反应达到平衡可能的数据是（ ）A.SO3=0.4 暖宝贴贴发热的原理是怎么回事?暖宝贴贴发热是怎么回事?它的原理是什么? Jolan say forever是什么意思 我想做化学实验,问深圳哪有买的 改写拟人句子当水鸟站在他的腰上歌唱时,流水也唱和着.仿写拟人句子 我想知道我为什么来到这个世界上.我想明白人到底为什么来到这个世界上. 春天词语 我想知道一个人来到这个世界是为了什么? 英语（补全句子）：The chameleonis( )than the snake He doesn't want to study at all.He is a great t____to his parents.的答案\ He doesn't want his parents to _____（担心） about hisstudy. Not his parents but he doesn’t want to go.这句话的意思是不是,不是他的父母,而是他不想去? 全部或大部分位于南半球的大洲分别是哪几个大洲? Jim bring his school report h_____.He doesn't want to it show his parents.(英语首字母,) my parents always want me to study all day.they ___ me too much Rewrite the following sentences with past participle as attribute or adverbial比如：When it was seen from the top of the hill,the city looked like a big garden然后换成_______________________,the city looked like a big garden 英语虚拟语气Rewrite or join the following sentences beginning with If …1.He was not astudent,so he couldn’t attend the lecture.2.I am not you,so I can’t make the decision.3.I am not abird,so I can’t fly to you right away.4.He didn’t t Rewrite the following sentences with a noun clause as the appositive1.The King decided that the prisoners would be set free.The decision surprised all the people.2.Tom won a scholarship to Oxford .The story spread quickly among his friends.3.A wild b 请问轴承类型代号的详细说明.经查知轴承类型代号分为0~8,不知道是否正确,如果正确,则请问：0~8分别表示什么类型.谢谢解答. 轴承代号：53524具体是什么轴承?我设计的轴是链轮轴,安装轴承处轴径D=130mm,我应该选择什么样的轴承呢? There are many students go to study abroad.错在哪里这个句子哪里错了.首先,go的词性是什么?是否是系动词.正确的改法There are many students go abroad to study.或者there are many students study abroad.那么正确句子中a 英语单词词根词缀变化会改变单词的词性谁有这种变化的系统总结？ In recent years,IELTS _____by many Chinese students to study abroad.In recent years,IELTS _____by many Chinese students to study abroad.A.has taken B.has been taken C.takes D.is taken选哪一个,为什么,谢谢~~不知道不要乱说,谢谢 表同一词性的字根和词缀有区别吗 What do you need ___ your trip?填词、、 —What ____ do you need for your trip?— Nothing _____.I've packed everything.A.else;otherB.other;elseC.else;else Rewrite the following with “so...that.”1.This film is very interesting.I have seen it twice.______________________________________________________2.He was very tired.He couldn't go on reading.______________________________________________________ 英语手抄报的内容 Light I Shine On You 歌词 英语手抄报内容有哪些是欢迎美国友人的,要段子!膝求 完全位于南半球的大洲是什么 既位于北半球又位于南半球的大洲是（ ）1.北美洲2.亚洲3.南美洲4.大洋洲