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一、填空题1.一辆汽车和一列火车以相同的速度行驶,具有的动能大.处在同一高度以相同速度飞行的老鹰和麻雀,具有的机械能大.2.独轮车是我国古代劳动人民的一项重要发明,到了清代独轮车又有了发展——河南安阳地区有人巧妙地在车上安装了一面风帆,利用风对帆的吹力推动独
First, fill in the blank 1. A car and a train traveling at the same speed, with great kinetic energy. Hawks and sparrows flying at the same speed and at the same speed, have a large mechanical energy. 2. The unicycle is the working people of ancient China. An important invention, the development of the unicycle in the Qing Dynasty - Someone in the Anyang area of Henan Province skillfully installed a sail on the car and used the wind to blow the sail to promote independence.