学校班级姓名得分市(县)校址邮编一、判断题(正确的打“V”,错误的打“x’’。每题1分,共20分) 1、()我国神舟五号回收时,当飞船通过“黑障,‘区后,以200山/s的速度下降时,就开始用降落伞减速。降落伞的 顶端开有一个小圆孔,这是为了减少伞的摆动,使着陆点准确和跳伞员安全。5 School Class Name Score City (County) School Site Postal Code I. Judgment Question (Correctly playing “V”, wrongly playing "x’’. 1 point for each question, 20 points in total) 1. () When China’s Shenzhou V is recycled When the spacecraft passed the “blackout,” area, and then descended at a speed of 200 mountains/s, it began to decelerate with a parachute. There is a small round hole at the top of the parachute. This is to reduce the swing of the umbrella and make the landing point accurate and the parachutist safe. 5