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物理知识一、要点及要求1.知识要点(1)物体静止或运动状态的改变与力的关系。物体几种常见的运动方式。(2)水、大气的压力和浮力的存在及特征。(3)作用力和反作用力的关系。(4)飞机能在空中飞行的道理。(5)常见的简单机械、传动机械的作用。(6)声音的...
Physics knowledge I. Key points and requirements 1. Knowledge Points (1) The relationship between the change of the static or moving state of the object and the force. Several common movements of objects. (2) The presence and characteristics of water, atmospheric pressure and buoyancy. (3) The relationship between force and reaction force. (4) The reason why an aircraft can fly in the air. (5) The role of common simple machinery and transmission machinery. (6) Sound’s...