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- 1一个密度为7.9X10³kg/m³的长方形铁块,长20CM,宽10CM,高5CM,则铁块对桌面的最大压强为（ ）pa,
- 2若根号（2x+1）（2-x）=根号2x+1×根号2-x,则x的取值范围是
- 3欣赏优雅的歌声,可以这么造句吗?
- 4解这个二元一次方程组用加减消元法4x-3y=2,x/4+y/3=3
- 5观察表一,寻找规律,表二、表三、表四分别是从表一中截取的一部分,其中a、b、c的值分别为____.
- 6There are another two birds in the three.改为同义句There are ___ ___ ___ in the tree.
- 70.25的100次方乘4的101次方=?
- 8The best way to improve listening s___ is to practice more.
- 9小学数计算题学题,1/1x2+1/2X3+1/3X4+.1/49x50=?
- 10描写三峡山势连绵不断的句子是?