首页
登录
职称英语
The expanding International Space Station has living space, a laboratory, sto
The expanding International Space Station has living space, a laboratory, sto
游客
2023-12-18
10
管理
问题
The expanding International Space Station has living space, a laboratory, storage modules and solar power panels. Now it will get a backbone. The space shuttle Atlantis is set to take off for the station with a huge truss crammed into its cargo bay. The goal of the l l-day mission is to attach the central part of what will eventually become a support beam for the station.
The truss is made up of metal crossbars and filled with wiring, pipes, computers and other equipment. It is to be attached to the station during four spacewalks by the seven-member crew. The astronauts will also attach a mobile transport platform to tracks atop the truss, the first part of a 300-foot (100-meter) mini-railroad that will carry a robotic arm and crew members back and forth across the station on future construction and repair jobs.
Atlantis’s 25th flight will be the first in the 21-year history of the shuttle program for which the National Aeronautics and Space Administration will delay announcing the precise launching time for a civilian mission. Citing heightened security since Sept. 11, the agency said that liftoff would occur between 2 and 6 p.m. and that it would not announce the official time until 24 hours before the flight.
Before launching, NASA must determine that he 58-foot Canadian - built robot arm attached to the station is operating properly, since it will be critical in installing the truss. The multijointed Canadarm 2, as it is called, was installed last April and has since experienced periodic problems. In some operations recently, the brake on one of the arm’ s seven joints has not released properly, causing it to malfunction.
To work around the problem, Canadian engineers wrote new computer software to operate the arm with six joints. The three-member resident crew at the station is testing the new operating procedures for installing the truss. If the software patch fails, the mission could be delayed several days until the problems are worked out.
Adding the center truss element begins a new phase for the $ 60 billion station, a 16-nation project led by the United States in cooperation with Russia, Japan, Canada and members of the European Space Agency. Over the next two years, six other girder sections will be added to serve as the home for four giant solar power arrays, heat radiators and other equipment that must be in place before attaching science modules from other nations. [br] Which of the following is NOT true of Canadarm 2?
选项
A、It has seven joints.
B、It is going to be installed in the proposed mission.
C、One of its brakes does not function properly.
D、A new computer program is being tried out on it.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3283525.html
相关试题推荐
Ateamofinternationalresearchershasfoundnewevidencethatanendangered
Itisalongtimeforalargemountofbigcorporationsorinternationalcomp
Itisalongtimeforalargemountofbigcorporationsorinternationalcomp
Itisalongtimeforalargemountofbigcorporationsorinternationalcomp
[originaltext]Justawordofadvice:Ifyou’reafamouspersonlivinginLo
Whyshouldanyonebuythelatestvolumeintheever-expandingDictionaryofN
Whyshouldanyonebuythelatestvolumeintheever-expandingDictionaryofN
Whyshouldanyonebuythelatestvolumeintheever-expandingDictionaryofN
Thehardtruthisthatthepathtointernationalrecognition,peaceandstab
InMay1995,AndrewLloydWebber,creatorofastringofinternationalhitmu
随机试题
[originaltext]W:Withallyourexperienceofinterviewing,Michael,howcanyou
流水CPU是由一系列叫做“段”的处理线路组成的。一个m段流水线稳定时的CPU的吞
某项目包含a、b、c、d、e、f、g七个活动,各活动的历时估算和活动间的逻辑关系
有关糖皮质激素免疫抑制作用的说法,错误的是A.淋巴细胞溶解B.抑制巨噬细胞对抗原
A.16周末 B.36周末 C.40周末 D.20周末 E.28周末临床
2020年我国农产品贸易额2468.3亿美元,同比增8.0%。其中,出口额同比减
小城镇公共中心的布置方式包括()。A.布置在城区中心地段,结合原中心及现有
假设一家公司的财务信息如下(单位:万元)。 在利润率、资产使用率和红利支付
甲股份有限公司于2019年2月在上海证券交易所上市。该公司有关人员的下列股份转让
城市地铁车站盖挖法施工中采用最多的是( )。A.盖挖顺作法 B.盖挖逆作法
最新回复
(
0
)