首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
The Mir Space Station The Russian Mir Space Station, which came down in 2...
The Mir Space Station The Russian Mir Space Station, which came down in 2...
admin
2020-12-24
26
问题
The Mir Space Station
The Russian Mir Space Station, which came down in 2001 at last after 15 years of pioneering the concept of long-term human space flight, is remembered for its accomplishments in the human space flight history. It can be credited with many firsts in space.
The Soviet Union launched Mir, which was designed to last from three to five years, on February 20, 1986, and housed 104 astronauts over 12 years and seven months, most of whom were not Russian. In fact, it became the first international space station by playing host to 162 people from 11 countries. From 1995 through 1998, seven astronauts from the United States took turns living on Mir for up to six months each. They were among the 37 Americans who visited the station during nine stopovers by space shuttles.
The more than 400 million the United States provided Russian for the visits not only kept Mir operating, but also gave the Americans and their partners in the international station project valuable experience in long-term flight and multinational operations.
A debate continues over Mir’s contributions to science. During its existence, Mir was the laboratory for 23,000 experiments and carried scientific equipment, estimated to be worth $80 million, from many nations. Experiments on Mir are credited with a range of findings, from the first solid measurement of the ration of heavy helium (氦) atoms in space to how to grow wheat in space. But for those favouring human space exploration, Mir showed that people could live and work in space long enough for a trip to Mars. The longest single stay in space is the 437. 7 days that Russian astronaut Valery Polyakov spent on Mir from 1994 to 1995. And Sergie Avdeyev accumulated 747. 6 days in space in three trips to the space station. The longest American stay was that of Shannon Lucid, who spent 188 days aboard Mir in 1996.
Despite the many firsts Mir accomplished, 1997 was a bad year out of 15 for Mir. In 1997, an oxygen generator caught fire. Later, the main computer system broke down, causing the station to drift several times and there were power failures. Most of these problems were repaired, with American help and suppliers, but Mir’s riputation as a spacestation was ruined.
Mir’s setbacks are nothing,though, when we compare them with its accomplishments. Mir was a tremendous success, which will be remembered as a milastone in space exploration and the space station that showed long-term human habitation in space was possible. But ifs time to move on to the next generation. The International Space Station being built will be better, but it owes a great debt to Mir.
One of the contributions Mir makes to science is that it
选项
A.helps astronauts get close to Mars.
B.enables scientists to develop new scientific equipment.
C.sets a record of the longest single human stay in space.
D.shows that multinational operations in space are less expensive.
答案
C
解析
第四段明确提到了“The longest single stay in space is the 437.7 days …”,诸多“首次”“第一”中的一个,即“人类在太空单独停留的最长纪录”,故此题答案为C。
转载请注明原文地址:https://ti.zuoweng.com/ti/4J9QKKKQ
相关试题推荐
Servicestations,motelsandrestaurantspromotedthedevelopmentoftheinte...
Someofthelargerbirdscanremainstationaryintheairforseveralminutes.A.
TheMirSpaceStation TheRussianMirSpaceStation,whichcamedownin2...
TheMirSpaceStation TheRussianMirSpaceStation,whichcamedownin2...
TheMirSpaceStation TheRussianMirSpaceStation,whichcamedownin2...
TheMirSpaceStation TheRussianMirSpaceStation,whichcamedownin2...
TheMirSpaceStation TheRussianMirSpaceStation,whichcamedownin2...
TheMirSpaceStation TheRussianMirSpaceStation,whichcamedownin2...
共用题干 第二篇TheMirSpaceStationTheRussianMirSpaceStation,whichcamedowni...
共用题干 第二篇TheMirSpaceStationTheRussianMirSpaceStation,whichcamedowni...
随机试题
证券投资组合的期望收益率等于组合中证券期望收益率的加权平均值,其中对权数的表述正
建筑工程施工安全技术 按照《施工现场临时用电安全技术规范KJGJ46—200
可以作为分摊计算依据的()。
2015年,某省对农民工在本市(区、县)创业的意愿进行了调查,共完成有效样本30
某债券基金某期期初可分配利润是100000元,其中未分配利润已实现为200000
2014年2月25日中共中央办公厅、国务院办公厅印发了《关于创新群众工作方法解决
有“抢婚”之俗的民族是()。A.傈僳族B.彝族C.白族D.纳西族
请根据下列“有氧呼吸”一节内容,回答问题,完成相应的教学设计(部分)。 有氧呼吸 对于绝大多数生物来说,有氧呼吸是细胞呼吸的主要形式,这一过程必须有氧...
社会公德的基本特点在于它的()。
患者,女性,50岁,确诊为胃溃疡活动期,其最可能的腹痛特点是()。A.夜间腹痛明显B.空腹时腹痛明显C.餐后0.5~1小时腹痛明显D.餐后即刻腹痛明