首页
登录
职称英语
Before China started developing manned spaceship in 1992, space experts of t
Before China started developing manned spaceship in 1992, space experts of t
游客
2025-03-28
17
管理
问题
Before China started developing manned spaceship in 1992, space experts of the nation’s "863" high-tech program had conducted 5-year studies on the question—will China choose to develop spaceship instead of space shuttle?
Some experts held that since the U.S. and Russia had worked out space shuttles, China could learn from their technologies and experience, skip over spaceship and leap directly to space shuttle.
Other experts believed that manned space flight was a matter involving human life, so safety and reliability must be put at top priority; space shuttle, although more advanced than spaceship technologically, bore tremendous technological difficulties and risks. Meanwhile, the development of space shuttle required many sophisticated technologies, which was a gap too big for China to bridge at that time.
Viewed from the history of manned space flight, both the Soviet Union and the United States started from spaceship when beginning their space flight missions. Currently the most frequently launched and widely used spaceship is satellite-style manned spaceship. Another reason was the huge fund needed in developing space shuttle was too much for China. While China was already in possession of mature satellite recovery technology, based on which the recovery of spaceship can be solved, and many technologies for spaceship can be borrowed from that of satellites.
After full discussion, comparison and analysis, experts reached agreement that China must take a space flight road conforming to its national conditions, must learn from the experience and developing way of Soviet Union and the U.S., which is, starting from spaceship instead of space shuttle.
Moreover, considering that China had achieved much in developing carrier rocket and gained rich experience and solid technological ground for application satellites, especially recoverable ones, experts concluded that China could, through efforts, leap directly to the third-generation spaceship—manned spaceship with multiple cabins and astronauts. [br] "Gap" (in Para. 3) probably refers to ______.
选项
A、clearance
B、difference
C、continuity
D、estrangement
答案
B
解析
由文中“Meanwhile, the development…which was a gap too big for China to bridge at that time.”可知gap在这里指的是差别、差距的意思,故选B。
转载请注明原文地址:https://tihaiku.com/zcyy/4015430.html
相关试题推荐
Ididn’tknowitthen,butthisdisruptivewayofreadingstartedwiththevery
BeforeChinastarteddevelopingmannedspaceshipin1992,spaceexpertsoft
BeforeChinastarteddevelopingmannedspaceshipin1992,spaceexpertsoft
Initialvoyagesintospaceintroducedquestionsscientistshadneverbefore
Initialvoyagesintospaceintroducedquestionsscientistshadneverbefore
Initialvoyagesintospaceintroducedquestionsscientistshadneverbefore
Beforethearrivaloftheinternet,computerfileswereexchangedviastorag
Beforethearrivaloftheinternet,computerfileswereexchangedviastorag
Beforethearrivaloftheinternet,computerfileswereexchangedviastorag
Beforethearrivaloftheinternet,computerfileswereexchangedviastorag
随机试题
Completethenotesbelow.WriteNOMORETHANTWOWORDSAND/ORANUMBERforeach
中国经济发展潜力大、优势足、空间广,前景光明。【T1】我们有9亿多劳动力,其中1.7亿多受过高等教育或有专业技能。(非限制性定语从句)每年大学毕业生7
[originaltext]Whotaughtyoumathlastyear?[/originaltext]A、IlikeMissZhaov
旅游行业管理中,引导市场和维持市场秩序的具体内容包括()。A.通过长远规划和
阅读以下说明和C代码,回答问题,将解答写入答题纸的对应栏内。 函数bubble
人体主要的热能来源是A.脂肪乳 B.氨基酸 C.果糖 D.维生素 E.葡
软件架构中,( )模式包括主程序/子程序、数据抽象和面向对象,以及层次结构。A
患者女,42岁。半年前因突发呕鲜血1200ml住院治疗,确诊为门静脉高压症,经保
采血进行哪项检查时,需用抗凝管采血A、肝功能检查 B、血清酶测定 C、尿素氮
房地产企业将经营出租的房地产收回进行二次开发后用于对外出售的,应该在收回时将其从
最新回复
(
0
)