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- 1已知氢离子的浓度为0.05摩尔每升,怎样求得PH为1.我只会求0.1或者0.01或者0.001的PH,不会这种的.
- 2法国人不说英语 用英语怎么说
- 3I found it interesting to learn English同义句I found___ ___to learn English
- 4证明cosx的导数是-sinx
- 5An ambulance (救护车) is waiting in the street.Somebody _____ hurt or killed.
- 6we have lunch at school every Monday.句子的组成结构是什么.
- 7填入适当的介词 1.Thank you very much _____ asking me to Mary's birthday party ______ sunday.
- 8打开标有“220伏1210瓦”的热水器,关掉家里的其他用电器,测得电能表(标有“1800r千瓦每时)的铝盘转
- 9最大的麦穗 :苏格拉底弟子们听了老师的话,悟出的道理是_____________.此时此刻,你想说点什么?
- 10若3分之2x的m+1次方y的平方与-3分之2x的立方y的n+1次方是同类项,那么m的n次方?