首页
登录
职称英语
A project likely to evolve in. the near or intermediate future is space tour
A project likely to evolve in. the near or intermediate future is space tour
游客
2023-09-12
60
管理
问题
A project likely to evolve in. the near or intermediate future is space tourism, a purely【B1】______ activity that would not have to rely on unpredictable government decisions. It would 【B2】______ put space operations on a much more solid, dependable footing and would enormously【B3】______ man’s space activity. While some people see space tourism as a【B4】______ multibillion-dollar business, difficult technical problems remain to be【B5】______
First, a manned reusable rocket like the Venture Star must be built. Then, a second serious problem must be【B6】______ : even today’s most-advanced space rockets are able to【B7】______ only about 2.5% of their launch weight into orbit-- a ratio that has hardly changed in the last 40 years. This fact is a result of the【B8】______ of material characteristics and chemical power sources, and【B9】______ .
Today the price of a ticket to space would have to be at least $ 50 000. It is questionable【B10】______ . However, space tourism may become more attractive once space facilities are built【B11】______ . [br] 【B5】
选项
答案
solved
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3006486.html
相关试题推荐
Fromthepassage,whichisthemaininfluencefactorinthefuture?[br]Theinf
Fromthepassage,whichisthemaininfluencefactorinthefuture?[br]Whatdo
Fromthepassage,whichisthemaininfluencefactorinthefuture?[br]Accordi
Fromthepassage,whichisthemaininfluencefactorinthefuture?[br]Fromth
【B1】[br]【B6】[audioFiles]audio_eusm_j01_329(20099)[/audioFiles]likely此处应该填入一个形
Oncetheyhadfame,fortune,securefutures;______(如今只剩下贫穷).nowallthatisleft
Whenyoustopsmoking,you’relikelytofeeltense,nervous,irritable,anxio
TheStockExchange______(对可能出现的政局变化很敏感).issensitivetolikelypoliticalchang
[originaltext]Ateamofscientistsrecentlybeganaprojecttomeasurethe
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
随机试题
______now,sheshouldcatchthetraintoParis.A、WouldshesetoffB、Wasshese
Forthesafety-consciousSwedishmarket,aUnitedStatesmanufacturerofdesktop
WhoDecides?Whetheryouareaharriedpa
关于声门型喉癌T2N1M0的描述中,错误的是:()A.癌肿可能已侵及声门上区
站用直流电源系统精益化评价细则中,要求蓄电池运行环境包括(____)。使用防爆型
腹部闭合性损伤病人,腹部X线平片发现腹膜后积气,最可能的损伤部位是A.横结肠
A.1/5~1/2 B.1/7~1/5 C.1/10~1/5 D.3/5~
等额分付资本回收系数记为()A.(F/A,i,n) B.(A/F,i,n)
土地使用权出让合同约定的使用年限届满,土地使用者需要继续使用土地的,应当至迟于届
(2019年真题)建设工程施工合同中,违约责任的主要承担方式有()A.返还财产
最新回复
(
0
)