首页
登录
职称英语
Two space shuttle astronauts scaling the outside of the International Space S
Two space shuttle astronauts scaling the outside of the International Space S
游客
2023-12-20
28
管理
问题
Two space shuttle astronauts scaling the outside of the International Space Station ran into some trouble Tuesday with a mix-up in cables and a lost part, a U. S. space agency spokesman said.
Their mission to finish hooking up a billion-dollar robotic arm was supposed to last six and a half hours but stretched to nearly eight.
First, there were problems with the cables Canadian Chris Hadfield and American Scott Parazynski were connecting to power and control the 18-metre-long Canadarm2, which they installed outside the station Sunday.
"The reserve power supply of the robot arm didn’t work at first, but it ran just fine after we sorted a couple of cables, "the National Aeronautics and Space Administration(NASA)spokesman said.
Then, as the spacewalkers were dismantling an unnecessary antenna from the station, Hadfield lost his grip on a connector part. NASA officials feared the part could get stuck somewhere in the workings of the station or visiting space shuttles and cause some disruptions, so as a precaution, Hadfield and Parazynski searched for it, but they had to give up, ending the chase unsuccessfully.
However, the main aim of the spacewalk was accomplished. Power and data connections were made to a port that is anchoring the robotic ann to the station. The arm is crucial to the future work on the coristruction site in space.
Canadam2 will literally lend a hand in building the station. The 18-metre crane has appendages at both ends that will allow it to grasp other ports that will be added to the station so eventually it will be able to crawl hand-over-hand like an inch worm along the station’ s outside walls.
But for now, that job was being left to spacewalkers like Hadfield and Parazynski. Until "Big Ann" is fully functional, outside work on the station can only be done by visiting shuttle astronauts using the shuttles’ own robotic arms.
Big Ann’s first big test will come Wednesday, when it is to hand its own 1, 360-kilogram delivery pallet to the shuttle Endeavour’s robotic arm so it can be stowed in the shuttle’s cargo bay for return to Earth.
Meanwhile, the eight space travelers who remained inside the station and shuttle Tuesday were kept busy unpacking about 2 tonnes of supplies and scientific equipment from a cargo module delivered by Endeavour.
Over the next several days, the module will be unloaded, then repacked with trash from the space station for Endeavour’s return to Earth, planned for Monday.
The station’s three-member crew was getting the first visitors of its four-month mission, which began last month.
They are the second crew to inhabit the station, an international project by the United States, Russia, Europe, Canada and Japan. Its construction is planned for completion in 2006. [br] What is crucial to the future work on the construction site in space?
选项
A、The arms.
B、The robot.
C、The robotic arm-to the station.
D、The shuttle.
答案
C
解析
见第六段最后一句,选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3291180.html
相关试题推荐
Justasworldoilscarcityisalreadycausinginternationalconflicts,sowi
Justasworldoilscarcityisalreadycausinginternationalconflicts,sowi
AsiansseetheUnitedStateslosingitsundisputedinternationalinfluencei
[originaltext]TwentypercentofMcDonald’sfast-foodsalesareoutsidetheU
[originaltext]TwentypercentofMcDonald’sfast-foodsalesareoutsidetheU
[originaltext]TwentypercentofMcDonald’sfast-foodsalesareoutsidetheU
[originaltext]WelcometothefirstseminaroftheInternationalHotelHospit
[originaltext]WelcometothefirstseminaroftheInternationalHotelHospit
Coca-Colahasbeenoperatinginternationallyformostofits100yearhistory
Somepeoplebelievethatinternationalsportcreatesgoodwillbetweenthenat
随机试题
Whenwe’relearningaforeignlanguage,makingsenseofwhatwehearisthe
Whichofthefollowingstatementsbestdescribetheconditionofthepassengers?
December1D
讨论函数在点的重极限与累次极限。
静脉注射不正确的步骤是A.在穿刺点上方约6cm处扎止血带 B.常规消毒皮肤后嘱
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.如
交互式教学模式主要是用来帮助()阅读理解。
2013年12月初,某企业拟在年底前与粮食供货商签订基于大商所玉米C14
(2017年真题)下列建设工程施工合同无效情况下产生的价款纠纷,法院不予支持的是
由直流电源供电时,通信设备电源端子输入电压允许变动范围为()。A.-57~-4
最新回复
(
0
)