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
A sweeping review of NASA’s human spaceflight program has concluded that the agency has an unsustainable and unsafe strategy tha
A sweeping review of NASA’s human spaceflight program has concluded that the agency has an unsustainable and unsafe strategy tha
admin
2019-06-10
47
问题
A sweeping review of NASA’s human spaceflight program has concluded that the agency has an unsustainable and unsafe strategy that will prevent the United States from achieving a human landing on Mars in the foreseeable future.
The 286-page National Research Council (NRC) report, says that to continue on the present course under budgets that don’t keep pace with inflation " is to invite failure, disillusionment, and the loss of the longstanding international perception that human spaceflight is something the United States does best.
A major argument against returning to the moon was that it didn’t pencil out — that there wasn’t nearly enough money dedicated to the program. If the goal is a human landing on Mars, the current strategy won’t work.
" Absent a very fundamental change in the nation’s way of doing business, it is not realistic to believe that we can achieve the consensus goal of reaching Mars," Mitch Daniels, the former Indiana governor and co-chair of the committee, said Wednesday morning in an interview.
A 2009 committee appointed by Obama urged NASA to keep its options open while investing in spaceflight technology and letting the commercial sector handle routine trips to low Earth orbit. But the NRC reviewers argue that NASA and its international partners should focus on the "horizon goal" of Mars and do whatever it takes to get there, step by step, avoiding changes in strategic direction.
NASA officials, aware that critics see the agency as adrift, say they have already been moving in the direction advocated by the NRC. Their strategy targets Mars, just as the NRC report now demands, they say. " All this work will eventually enable astronaut missions to Mars," NASA Administrator Charles Bolden said in a recent NASA white paper.
"NASA’s been doing some work, and has been doing some thinking over the last six months, that is in alignment with what the NRC says the top-level goals are," said Greg Williams, a NASA deputy associate administrator.
But Williams was cool to the suggestion of a return to the moon, saying the airless moon offers little help in developing the kind of descent and landing techniques needed on Mars, which has a thin, troublesome atmosphere.
The NRC committee probed the philosophical question of why we send people into space to begin with. The committee concluded that the purely practical, economic benefits of human spaceflight do not justify the costs but that the aspirational nature of the endeavor may make it worth the effort.
The National Research Council report implies that______.
选项
A、the U. S. plays a leading role in spaceflight
B、international cooperation requires more budget
C、the program’s chances of success are slim
D、the public need to give more support to the program
答案
A
解析
本题是推理题,要求考生理解第二段引号内美国国家科学研究委员会报告(NRC)的原话隐含的意思。关键点:...human spaceflight is something the United States does best.
转载请注明原文地址:https://kaotiyun.com/show/BMUO777K
0
考博英语
相关试题推荐
AccordingtoBT’sfuturologist,IanPearson,theseareamongthedevelopmentsscheduledforthefirstfewdecadesofthenewmil
Asawisemanoncesaid,weareallultimatelyalone.ButanincreasingnumberofEuropeansarechoosingtobesoataneverear
"Itisbettertogivethantoreceive.";"BewareofGreeks(ancient,ofcourse)bearinggifts."Giftsareafundamentalelement
______theweatherhasimproved,we’llbeabletoenjoywatchingthetennisgame.
【M1】______Applicationfilesarepiledhighlythismonthincollegesacrossthecountry.【M2】______Admissionsofficersareporing
Hequickly______behindthebuildingtoavoidbeinghurtbythestonesthrowninhisdirection.
Itishardtopredicthowscienceisgoingtoturnout,andifitisreallygoodscienceitisimpossibletopredict.Ifthethi
Thereisprobablynosphereofhumanactivityinwhichourvaluesandlifestylesarereflectedmorevividlythantheyareinthe
Untilmeninventedwaysofstayingunderwaterformorethanafewminutes,thewondersoftheworldbelowthesurfaceofthesea
CivilizationsCivilizations,vastorotherwise,canalwaysbelocatedonamap.Anessentialpartoftheircharacterdepends
随机试题
发动机由两大机构与五个系统组成——即_______、_______、_______、_______、_______、_______和_______。
技能培训时,怎样在铣工专业理论培训讲授中做到理论联系实际?
一般情况下法定传染病报告人不包括
2010年5月1日,王某向甲房地产开发企业(以下简称甲企业)购买了一套80m2住房,单价为8000元/米2,可以使用其住房公积金。这是他购买的第一套自住普房,现已办理了房屋产权登记。入住后,王某发现购房合同约定的房屋面积比房屋产权登记的面积少了3m2,与开
工业性建设项目,一般都有()的协作供应问题。
对于项目部环境管理,下面哪项不是项目部必须要做的工作()。
关于葛兰碧九大法则,以下说法中,有误的是()。
根据我国《房产税暂行条例》的规定,不征收房产税的地区是( )。
一台微机性能的好坏,主要取决于
WhenMr.Blackretired,hisson________thebusiness.
最新回复
(
0
)