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- 1H2、O2组成的混合气体20g,经点燃充分反应后生成18g水,则混合气体可能是( ) A.2g 氢气和16g 氧气 B.4g 氢气和16g 氧气 C.2g 氢气和18g 氧气 D.无法确定
- 2词语面什么菜什么
- 3x-(4/11x+5)/(4/11x+5)=27/17怎么解?
- 4物体所受合外力方向不断改变时,一定做曲线运动为什么不对?
- 5WILL YOU PLEASE TAKE IT OUT OF THERE
- 6He ____(not come) yesterday,otherwise you would have seen him.怎么填?属于什么语法项目?
- 7I was just going to cut my rose bushes but someone it.Was it you?A.has done B.had done C.would
- 8纺织厂购进由甲、乙两种原料配成的两种材料,已知一种原料按甲:乙=5:4配料,每吨50元;另一种材料按甲:乙=3:2配料,每吨48.6元,甲、乙两种原料的价格各是多少?
- 9do/does和be about to 在一般将来时中的用法?
- 10解方程:10^(1+lgx)=x^((7+lgx)/4)