无氧铜好还是纯铜好

where,it,shall,we,and,when把它组成一个句子. 如果多项式6x的n+2次方-x的2-n次方+2是关于x的三次三项式,代数式n的值 若多项式,6x的n+2次方-x的2-n次方+2是三次三项式,求代数式n的二次方-2n+1的值 多项式6x^n+2-x^2-n+2是关于x的三次三项式,求代数式n^2-2n+1的值 英语翻译Today some people call Amsterdam the“City of Bicycles”because it is a city which is flat and convenient for bicycles． In the 1960s,a group of cycling fans __had__ an idea.They believed that it would be better for everybody if only b 英语翻译Today some people call Amsterdam the“City of Bicycles”because it is a city which is flat and convenient for bicycles． In the 1960s,a group of cycling fans __had__ an idea.They believed that it would be better for everybody if only b Ignore some of the people and dogs翻译 人教版三年级语文上册里的古诗有哪些?（全部） 人教版初三上册语文古文和古诗 人教版三年级上册的古诗是?我不记得是几首,知道者请回答. Really annoying,some things really do not want to think about!请帮忙翻译成中文, it is not possible to r____ everything in shanghai,but there are some of the things i think youmust see. Some things I can not say,but I think you can feel 小学语文三年级上册的古诗有哪些? 小学一年级上册语文的古诗有那些 若关于x,y的单项式cx的2a+2次方y²与0.4xy的3b+4的次方的和为零½a²b-[2分之3a²b-(3abc-a²c)-4a²c]-3abc 若关于x,y的单项式cx的2a+2的次方y平方与0.4x四次方y3b-1的次方的和为零求½a²b-[3分之2a²b-(3abc-a²c)-4a²c]-3abc 若关于x,y的单项式cx的2a+2次方y2与0.4xy的3b+4的次方的和为零½a²b-[2分之3a²b-(3abc-a²c)-4a²c]-3abc的值为多少.为什么? Some of the things some people,only to miss谁给我翻译成汉语 Some people believe only once is enough的英语 Some people believe only once is Some people,and not contact ,only miss Some people,and not contact ,only Some people,and not contact ,only miss翻译成中文是什么意思? （初一数学题--代数式）如果(m +1)x²y的n-1次方是关于x ,y的六次单项式,系数为四分之一 【紧急】如果(m +1)x²y的n-1次方是关于x ,y的六次单项式,系数为四分之一,则m=______,n=_____ 人教版初三语文上册的古诗和文言文.如图.初三上册的文言文 还有古诗 包括后面那十首古诗.急用, 急需人教版初三上册语文所有古诗及文言文 初三上册语文人教版的古诗（包括后面那10首） 以及文言文 急用 一定要完全 古诗!文言文! Some people see their pets as members of their family is this good?请用英语表达. family与people是可数名词么?如何变复数? what are some of the basic necessities for every family?麻烦用英语写完整句子~ write down some of the rules of your family