氯气，溴气，碘健能比较

Would you please give me a hand?Otherwise I cannot finish the work_____.为什么空格处选before he comes,而不是when he comes? _____ interesting the film is!interesting是形容词,选what an 为什么不对?_____ interesting the film is!a.what B.what an c.how d.how an interesting是形容词,选what an 为什么不对? what an interesting film Auatar is!(同义句) 关于高中电化学中锌锰电解质为了延长干电池寿命和提高其性能,人们将电池内的电解质NH4Cl换成湿的KOH ,制成碱性锌锰电池.换成湿的KOH 后1.为什么就能延长干电池寿命和提高其性能?2.有人说 1.He did the work carefully,(how)2.You have a warm heart,(what)3.It is an interesting film,(what)改感叹句! 锌锰酸性电池正极哪来的NH4+,锌锰碱性电池正极哪来的MnO2,是看电解质么,还是看溶液酸碱性 锌锰电池的电解质溶液是什么? 在电化学的方程式里面,为什么有时候电解质不写进方程式,比如铜锌电池,为什么有得又要? she was new to the neighbourhood新概念第二册 6 . 首字母填空Now she has p_____ with her new school. 高锰酸钾是非金属物质还是金属物质啊? The writer has just moved to a new house.She was___yesterday.A.at house B.to the house C.at home D.in the home该选哪一个? 什么基团能使酸性高锰酸钾褪色 一道初中化学题（有关高锰酸钾与氯酸钾的）小惠同学在一次实验中误把高锰酸钾当成了二氧化锰加入了氯化钾中,加热时,氯酸钾的分解速率明显加快.于是她惊奇的告诉小华同学,高锰酸钾也 高锰酸钾是一个原子团吗?有没有根离子的化合价是0? 英语中,“愿.与你同在”怎么说?西方人经常说的,比如：愿神与你同在,怎么说? 为什么叫牺牲阳极金属保护法,不是负极被腐蚀吗? 牺牲阳极的阴极保护法和牺牲负极的正极保护法 有什么区别? 什么是牺牲阳极阴极保护法? 高中电化学:在金属材料的防护方法中,“牺牲阳极的阴极保护法”的原理是原电池原理,为什么还叫阴阳极呢? Imagine you,who used to have good sight/health,now were told to have only three days to see/live.How would you spend the last three days with your sight/life? if i have three days to see 怎样理解?诉求!谢谢! This is what I can imagine that what I will do if I have only three days to see.如果有应该怎么改正? This is-----English book.Would you please give me------Chinese one?A a;an B an;a Cthe;a Dan;the 英语作文an important event in my life Interneting things in my life（英语作文）80个单词左右 in contrast with 什麽意思?翻译 is important in my life英语作文——————is important in my life为题,的英语作文,初三水平的, contrast什么意思 In contrast with their system是什么意思`急求 Auto Contrast什么意思 (When You) Call Me 歌词