The writer and the speaker have a debate on sending astronauts. The writer puts forward three obstacles, which are opposed by the following lecture.
First, the writer claims that the landing is not safe. From 1996 to 1999, four spacecratfs crashed because of computer errors. While the speaker views this issue from an opposite angle, according to him/her, computer program accuracy has been improved. Besides, astronauts could adjust conditions to avoid unexpected events. No spacecratfs have crashed since 1999.
Secondly, the passage states that It is hard for spacecraft to carry fuels. Spacecraft needs to carry large amounts of fuels for its way to Mars as well as back then. However, the speaker casts doubt on this opinion by saying that when the there is no need to take a lot of fuels. Hydrogen and Oxygen in ice on Mars can make fuels. Therefore, spacecraft only need to take fuel that supports it to Mars.
Last, the writer argues that the trade between the without protection, astronauts would suffer radiation. By contrast, in accordance with the speaker, this claim does not hold water. Magnetic field can be created to guarantee safety. It is as same as the earth magnetic field.
本文来源:https://www.wddqw.com/Hgvx.html 正在阅读: 二年级搞笑作文100字:母亲节03-05 简单的上海话绕口令集锦02-11 2021年山东高级经济师报名时间:4月13日-4月21日07-02 2020年上半年安徽中小学教师资格证缴费时间及费用【2020年1月9日-13日】01-22 在农村有什么能做的生意啊?06-03 2022年4月陕西补办(更换)护士资格考试证书人员的公示04-19
上一篇:配件计划员岗位职责工作计划
下一篇:配件销售工作计划范文
相关热搜
推荐文章
热门阅读
|