A. speed B. shape C. weight D. material 相关知识点: 试题来源: 解析 B。本题重点在于对spaceship(宇宙飞船)相关名词的理解。宇宙飞船的形状对于其安全返回地球至关重要,选项 B 正确;速度(选项 A)、重量(选项 C)和材料(选项 D)虽然也重要,但不是直接影响安全返回的关键因素。反馈...
Measuring the speed of a spaceship using the 'Absolute zero velocity machine' 机译:使用“绝对零速度机器”测量宇宙飞船的速度 获取原文 获取原文并翻译 | 示例 获取外文期刊封面目录资料页面导航 摘要 著录项 相似文献 相关主题 摘要 The "Absolute zero velocity machine" is a n...
百度试题 题目 [ ] The astronauts know ___ control the direction and the speed of the spaceship.A. how can they B. what39s to C. how to D. what can they 相关知识点: 试题来源: 解析 C 反馈 收藏
The Water Margin is one of the four classic Chinese novels.() A. 正确 B. 错误 查看完整题目与答案 一个遗传平衡的群体中,红绿色盲(XR)致病基因的频率是0.07,则() A. 女性发病率是0.0049 B. 群体发病率是0.14 C. 女性发病率是0.07 D. 男性发病率是0.0049 E. 男性发病率是0.07 ...
A. 正确 B. 错误 查看完整题目与答案 按照《聚氯乙烯树脂中残留氯乙烯单体含量测定方法》(GB/T4615—1984),在测定氯乙烯单体含量时,应确保有一个与测试样含量相近的标准样,测定时,测试样和标准样应取相同量的气体,并在仪器同一灵敏度下分析。 A. 正确 B. 错误 查看完整题目与答案 红外光度法测...
百度试题 结果1 题目9. Astronauts use computers to control the speed(控制速度) ofspaceships(spaceship). 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Answer to: A spaceship passes you at a speed of 0.52 c. It has a rest length of 48.5 m. How long is it in your frame? By signing up, you'll get...
The spaceship is traveling ___ the speed of light. A. at B. in C. on D. for 相关知识点: 试题来源: 解析 A。以……的速度用 at the speed of,固定搭配。in 表示在……里面,on 表示在……上面,for 为了等意思,都不恰当。反馈 收藏 ...
Peter J. RiggsInstituto Politecnico Nacional
A spaceship is launched from the Earth's surface with a speed v. The radius of the Earth is R and the mass of the Earth is M. What will its speed be when it is very far from the Earth? What is the escape speed of a spherical asteroid, whose radius is 535km, and ...