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- 1将一块5克重的合金,投入足量的稀硫酸中,充分反应产生氢气0.2克,则合金的组成可能是( ) A.Al、Fe B.Cu、Zn C.Mg、Al D.Fe、Ag
- 2k为何值时,多项式x²-2kxy-3y²+3xy-x-8中不含x、y的乘积项?
- 3How about [ ] for a walk around the lake Ago Bwent Cgoing
- 4您能帮我找他吗?can you help me ()it?find还是look for
- 5she said it in a w_____,so I couldn't hear
- 6描写家乡景色的作文
- 7she often walks home after school的同义句是什么
- 8比较2减根号3和根号5减根号4的大小,不用计算器
- 9英语翻译
- 10likes playing soccer.I a.(首字母提示a) like it very much The ( )of my watch is red.