首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Space Junk Space junk, also known as space waste, / is objects in orbit around the earth created by humans that no longer se
Space Junk Space junk, also known as space waste, / is objects in orbit around the earth created by humans that no longer se
admin
2015-07-28
51
问题
选项
答案
Space Junk Space junk, also known as space waste, / is objects in orbit around the earth created by humans that no longer serve any useful purpose. / They consist of everything from entire spent satellites / to explosion fragments, deliberate insertion of small needles, and many other objects. / As orbits often overlap, the space junk is a potential collision risk for spacecraft. / (?) The vast majority of pieces of space junk are small particles. / Contact with these particles causes erosive damage. / The majority of the damage can be eased by adding a thin layer of metal / outside of the main spacecraft body. / However, certain portions of many satellites cannot be protected in this way, / the solar panels and windows for instance. / If a collision with larger pieces occurs, / many of the resulting fragments from the damaged spacecraft / will also be in the 1 kilogram mass range. / Consequently, these objects become an additional collision risk.
解析
转载请注明原文地址:https://kaotiyun.com/show/NRXK777K
0
专业英语四级
相关试题推荐
Themeditationbeginsinawaythatsurprisesmanypeople,becauseitstartsbycultivatinglovingfeelingtowardyourself.Yet
Themeditationbeginsinawaythatsurprisesmanypeople,becauseitstartsbycultivatinglovingfeelingtowardyourself.Yet
AnewtypeoforganismdiscoveredinanArctictunnelcametolifeinthelabafterbeingfrozenfor32,000years.Thedeep-free
Thechocolatebarmanufactureratthecentreofanextortionthreatsaysthere’snoconfirmedlinkbetweenitsproductsandilln
Advertiserstendtothinkbigandperhapsthisiswhythey’realwayscominginforcriticism.Theircriticsseemtoresentthem
Languagestyleaffectslong-termrelationshipstrengthandthecompatibilityofexistingandwould-becouples,suggestsanewst
PeopleintheUnitedStatesinthenineteenthcenturywerehauntedbytheprospectthatunprecedentedchangeinthenation’seco
Sheremainsconfidentand______untroubledbyourpresentproblems.
Whichofthefollowingsentencesexpressesacertainty?
WhichofthefollowingsentencesexpressesINTENTION?
随机试题
下列关于盗窃的说法正确的是()。
兰州地区大气压一般为()mmHg。
Inrecentyears,moreandmoreforeignersareinvolvedintheteachingprogramsoftheUnitedStates.Boththeadvantagesandth
患者,男,60岁。因反复咳嗽、咳痰10年,加重1天入院。患者症状通常冬春季加剧,夜晚加重,每年发病持续3个月.患者剧咳时气喘不能平卧,痰液黏稠。查体:两肺底散在干、湿啰音。呼气延长,伴哮鸣音。胸片示肺纹理增多及紊乱。最主要的护理问题是
患者,男,50岁。缺失,前倾,与对颌牙接触不良,余牙正常。设计牙支持式义齿时,上卡环应设计
缺乏独立性,过分顺从他人的意志,处处委曲求全,这种心理问题属于()。
有40份文件,甲乙丙3人参加处理,最后结果是,乙比甲多4份,但只有丙处理份数的,那么,他们处理份数的比值是:
推进党的作风建设的核心是()。
个体在解决问题过程中表现为搜集或综合信息与知识,运用逻辑规律,缩小解答范围,直至找到惟一正确的解答的认知方式称为()
下列关于生产者消费者的叙述中,哪一个是正确的?()
最新回复
(
0
)