论文部分内容阅读
例1(陕西省)2002年3月25日,“神舟”三号飞船由“长征二号F”捆绑式大推力运载火箭成功送上太空.飞船在脱离火箭之前,相对于是静止的.飞船返回舱在返回过程中,与大气层发生剧烈摩擦,机械能转变为,使舱体外表变成一团火球.”〔答案:火箭、内能(或热能)〕例2(北京海淀区)“神舟”
Example 1 (Shaanxi Province) On March 25, 2002, the “Shenzhou III” spacecraft was successfully delivered to space by the “Changzheng No. 2” bundled high-thrust launch vehicle. The spacecraft was relatively stationary before being separated from the rocket. The spacecraft returned. During the return of the capsule, there was fierce friction with the atmosphere and the mechanical energy was changed so that the outer surface of the capsule turned into a ball of fire.“ [Answer: Rocket, Internal Energy (or Thermal Energy)] Example 2 (Beijing Haidian District) ”Shenzhou"