湿法作业专项措施

there is a book和there is one book如题,什么时候用a/an 什么时候用one 呢 什么是变价金属 哪些地方用24小时计时表示时间 电镀锌 方面的问题：镀锌出来用盐蒸汽蒸24小时怎样不变色 which kind of food would you like?求标准的英文回答方式.但是 是回答食物的种类 还是名称呢？ It is a kind of food from Japan改为It is a kind of —Which kind of food smells ____ or tastes ____?—Sorry,I don’t know.A.good; well B.good; ba—Which kind of food smells ____ or tastes ____?—Sorry,I don’t know.A.good; well B.good; bad C.good; good D.well; well评论|0完善我的回答 Jim likes many ——（kind的适当形式）of Chinese food. What do you do __ christmas?快 What do you do ___(clebtate)Christmas 对划线部分提问 Behind the door there's a book -------- ---------the book?对划线部分提问(Behind the door ) there's a book-------- ---------the book? 什么时候金属会有变价 fe在化学反应中的变价规律（追分）铁在跟哪些反应变2价哪些变3价（包括含铁的化合物）不要涉及太深奥的东西 What、which、what colour、what kind of的意思 请教“What do you do at Christmas"这里的介词为什么用at 而不是用on? what do you usually do----------christmas?怎么填, There ___(be) something difficult in the book -Lily has made a decision to study hard.-___-Lily has made a decision to study hard.-_____.A.so has heB.so have sheC.so she hasD.so she does paul doesn't have to be made to study.he is always a hard-working student.翻译+ . many students who survived ___ earthquake in sichuan Province have determined to study hard to makecontributions to the society in __future a the ;the写 b.不填；不填 l have to Study hard (一般疑问句) What do you do的同义句是什么What do you do?的同义句是什么 何谓变价金属 what do you do ?的同义句是什么 1 What do you do 同义句 _______ your ________?2 Mike was born (in 1992 in New York.)对括号内部分提问____ _____ _____ was Mike born? 关于化学中的元素变价元素的化合价决定于元素的最外层电子数,最外层电子数又是一定的,那么元素的变价是怎么回事?不是化合价而是如Fe2+和Fe3+之类的同一元素的不同化合价! What can I do for you的同义句是 寻求关于How to spend the money的英语作文 He had a litltle trouble _his tires.A.to B.fixing C.fixed D.fix应该选哪个 A.fix B.fixing C.fixed D.to fixI fell down and broke three of my teeth.I wonder how many times I have to come here and get my false teeth_____. My father's bike is broken.My father is busy _ .A.to fix it up B.fixing it up C.fixing up it The radio doesn't work well,it need_________ A fixing Bbeing fixed C to fix D fixed为什么?need doing = need to be done可是这里是用的doing,但是不是被修理吗?为什么不选B呢?