论文部分内容阅读
一、杠杆、滑轮.这部分内容是中考命题的热点,常以填空、选择、作图、实验、计算等题型出现.特别是杠杆的平衡条件及应用、力臂的作图、动滑轮和定滑轮的实质、特点、要求利用滑轮按要求设计合理的装置,这些是中考常考的内容,大多通过具体的生产、生活情景,考查与科学技术、社会联系紧密的基础知识和研究方法的掌握情况、基本规律的理解及应用等,而且常与压强、浮力及数学知识有机结合,成为中考的压轴题.
First, leverage, pulleys .This part of the content is the hot topic in the senior high school entrance examination, often fill in the blank, choice, drawing, experiment, calculation and other questions appear .Especially the lever balance conditions and applications, arm drawing, The essence and characteristics of pulleys require the use of pulleys designed according to the requirements of the device, these are often test the contents of the exam, mostly through specific production and life scenarios, and science and technology, social and closely examine the mastery of basic knowledge and research methods , The basic rules of understanding and application, etc., and often with pressure, buoyancy and mathematical knowledge of organic integration, a finale of the examination questions.