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
考研
The number of permanent crew on the International Space Station will be increased, and possibly doubled, from 2006 by providing
The number of permanent crew on the International Space Station will be increased, and possibly doubled, from 2006 by providing
admin
2010-01-13
105
问题
The number of permanent crew on the International Space Station will be increased, and possibly doubled, from 2006 by providing it with an extra "lifeboat". The move, announced in Japan last week by the ISS partner nations, means the space station crew will at last be able to do useful scientific research.
The number of crew on the ISS has been limited to three by the capacity of the Russian Soyuz capsules that would return them to Earth in an emergency. But running the ISS requires the full-time attention of more than two crew members, leaving just half the time of one of the crew free for research. This is woefully inadequate, and a NASA-commissioned report concluded in July that no meaningful research is possible with a three-person crew.
NASA originally planned to replace the Soyuz rescue capsule with a seven-person "crew return vehicle", which would have allowed the ISS to carry a significantly larger permanent crew. But faced with a $ 5 billion budget overrun, the agency cancelled the project last year.
Then last month NASA announced plans for an orbital spaceplane as a successor to the ageing fleet of space shuttles. This could double as a rescue vehicle for at least six people, but it will not be ready until 2010.
Waiting for the spaceplane could be a big problem as Soyuz capsules have only a six-month lifespan and the Russian agreement to supply them expires in 2006. This could leave a four-year gap with no guaranteed rescue vehicle for the ISS, and hence no crew. Russia has already warned that cash shortages could force it to stop making the capsules.
If the cash can be raised, however, the new plan is to permanently station two Soyuz capsules at the ISS, raising the rescue capacity to six. The ISS’s Russian-built modules have three ports where Soyuz can dock, one of which is usually used for uncrewed cargo modules.
The first paragraph of the passage suggests that ______.
选项
A、a crew of six is ideal for ISS
B、now crew at the ISS don’t have adequate equipment to do research
C、at present crew at the ISS do very little scientific research
D、the ISS headquarters moved to Japan last week
答案
C
解析
推断引申题。本文第1段的最后一句中will at last be able to do useful scientific research这一部分暗示目前的3人编制根本无法进行科学试验。
转载请注明原文地址:https://kaotiyun.com/show/qjmi777K
0
在职申硕(同等学力)英语
相关试题推荐
重度贫血的血红蛋白浓度是
SomeofthesestudiesAhaveshownthatalthoughsomepeoplehavetroubleBtofallasleep,othershaveCanequallydifficulttime
Learningdisabilitiesareverycommon.Theyaffectperhaps10percentofallchildren.Fourtimesasmanyboysasgirlshavelea
Andreaallowedthehitchhikertotakearideinhercar,mainlybecause______Andrealookedinthepassenger’sbagto______
Bothcivilizationandculturearefairlymodemwords,havingcomeintoprominentuseduringthe19thcenturybyanthropologists
AfterflexingitsmechanicalarmandfindingsomepuzzlingchemistryinapatchofMartiansoil,theroboticroverSpiritbegani
JudgmentwassuspendedtillthefollowingMondaybecauseofthelackofevidence.
AccordingtotheU.S.NationalHighwayTrafficSafetyAdministration(NHTSA),carcrashesaretheleadingcauseofdeathamong
Everyyeartelevisionstationsreceivehundredsofcomplaintsabouttheloudnessofadvertisements.However,federalrulesforbi
Thetravelagencyhasafullprogramof______,iftouristswishtovisitlocalplacesofinterest.
随机试题
A.AMYB.ALTC.GGTD.ACPE.ALP对慢性酒精中毒敏感的是
施工现场的给排水条件属于影响施工质量环境因素中的()。
出口收汇核销是在出口退税工作之后的一项工作。()
对于行政单位购置的纳入政府采购范围的资产,()应当对购置资产进行验收、登记。
Spousesofemployeesarewelcome________notrequiredtoparticiPateinthecompany’ssocialevents.
群体发展的最高阶段是()
根据以下资料,回答下列问题。第五次全国人口普查以2000年11月1日零时为标准时点,S省常住人口34714835人,根据《全国人口普查条例》和国务院的决定,我国在2010年又以11月1日零时为标准时点进行了第六次全国人口普查。下面是该省常住人口的地区分布
由于受金融危机影响,与客户的一个合同无法执行,公司派你去和客户沟通,你该如何做?
(1)在考生文件夹下,有一个数据库“school”,其中有数据库表“student”“score”和“course”。在表单向导中选取“一对多表单向导”创建一个表单。要求:从父表“student”中选取字段“学号”和“姓名”,从子表“score”中选取字段
Hearingwewill______candies,thechildrensuddenlygatheraroundus.
最新回复
(
0
)