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
2024-06-06
45
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] 【B3】
选项
答案
expand
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3622750.html
相关试题推荐
Fromthepassage,whichisthemaininfluencefactorinthefuture?[br]Theinf
Fromthepassage,whichisthemaininfluencefactorinthefuture?[br]Accordi
TheStockExchange______(对可能出现的政局变化很敏感).issensitivetolikelypoliticalchang
【S1】[br]【S20】A、involveB、evolveC、solveD、dissolveA形近词辨义。根据语义可以判断,将来的研究领域可能会涉
[originaltext]Ateamofscientistsrecentlybeganaprojecttomeasurethe
[originaltext]Ateamofscientistsrecentlybeganaprojecttomeasurethe
[originaltext]Ateamofscientistsrecentlybeganaprojecttomeasurethe
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
随机试题
IttookPeterquiteawhiletofindaplaceforhiscarandintheendheha
Replacingprinterinkcartridgesisexpensive.Moreover,disposingofthemis【K4
DOGGEREL:POET::A、symphony:composerB、easel:painterC、caption:cartoonist
Overthelastdecadetherehasbeenincreasinginterestinnewertechniques
ThePurchaseofAlaska,aRealDealA)Alaskaisthelargest
图示桁架的零杆数量是( )。 A.4 B.5 C.6 D.7
一名合格的中国导游员应该具备的首要条件是()。A.热爱祖国 B.情操高尚 C
下列属于董事会职责的是()。A.制定公司基本管理制度 B.负责公司日常经
一位临产孕妇,突感头痛,恶心,相继发生抽搐,查血压为22.0/14.6kPa,下
女性,46岁,消瘦,心悸6个月,甲状腺Ⅱ度肿大,无触痛,临床诊断为Graves病
最新回复
(
0
)