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- 1物体或图形作平移运动是,是在()方向上移动,而()没有发生方向上的改变
- 2_____people invited is fifty , but____them are absent for difficult reasons.
- 3如图,在梯形ABCD中,AB∥CD,AD=DC,求证:AC是∠DAB的平分线.
- 4在用一个3V电源和一个6V电源并联作为电源的电路中,只连一个电阻,电阻两端电压?
- 5因为人们的对环境的破坏,许多野生动物濒临灭绝的英语翻译
- 6A:-B:which one?A:- B:she is betty.A:- B:yes she is.A:- B:no,she is a teacher.空里填什么?
- 7质量为mB=2kg的平板车B上表面水平,开始时静止在光滑水平面上,在平板车左端静止
- 8my hobbies are sleeping and listening to music这种表达对吗
- 9解不等式组5x-2≥3(x+1).(1/2x)-1≤7-(3/2x).x-1>2
- 1025*73+75*9怎么简便计算