留学攻略网为您提供包括托福、雅思、sat、GRE、本科留学、高中留学、研究生留学..在内的全方位考试攻略以及留学攻略

sherrywang-0202(学姐微信)

首页 > 攻略库 > 考试攻略 > 托福 托福阅读材料(国际空间站)

托福阅读材料(国际空间站)

  托福阅读需要一分耕耘一分收获,一点一滴地积累,所以不要偷懒哦!少年,加油吧!今天井澜为大家带来托福阅读材料之国际空间站,希望能帮助到大家!


  The crew of the International Space Station have been forced to reduce power after half the cooling system suddenly shut down over the weekend.


  Nasa officials insisted the three Americans and three Russians aboard were not in danger.


  Urgent spacewalk repairs are being discussed for this week.


  Without thermal controls,temperatures on the ISS‘s Sun-facing side can soar to 121C (250F),plunging to minus 157C (-250F) on the dark side,Nasa says.


  “There might be a comfortable spot somewhere in the middle of the station,but searching for it wouldn’t be much fun,” a statement on its website adds.


  The station is now operating on a single string,the Associated Press reports,and has no safeguard in case of further cooling system failures.


  Alarms sound


  Trouble arose on Saturday night when one of the two ammonia-fed cooling loops shut down,triggering alarms throughout the ISS.


  The two ammonia lines ensure that all the station‘s electronic equipment does not overheat.


  Astronaut Tracy Caldwell Dyson set in motion equipment shutdown procedures and,with crewmate Douglas Wheelock,installed a jumper cable to keep all the rooms cool.


  The Global Positioning System circuit,several power converters and a set of devices that route commands to various pieces of equipment were switched off.


  Two of the four gyroscopes - part of the space station’s pointing and navigating system - were initially shut down but the crew installed a jumper cable to bring up a third gyroscope,leaving the station in a much more stable position,AP says.


  Flight controllers tried to restart the disabled ammonia pump early on Sunday but the circuit breaker tripped again.


  Any repairs later this week almost certainly will involve replacing the faulty ammonia pump,a difficult job that would require two spacewalks,AP adds.


  “It‘s pretty clear that we’re going to want to have a course of action to take as quickly as possible,” Nasa spokesman Rob Navias said at the Johnson Space Center in Houston,Texas.


  “This is not something we want to linger over.”


  Two spare pumps are stored on the outside of the station. Two of the Americans on board are already scheduled to conduct a spacewalk on Thursday for routine maintenance.


  No space shuttle visits to the ISS are planned before November.


  希望以上由井澜为大家带来的托福阅读材料之国际空间站,希望能给大家提供帮助!井澜及时为大家提供最新留学资讯,小编祝大家考试顺利!更多信息请关注井澜托福频道。


特别声明:本网站所收集的部分公开资料来源于互联网,转载的目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。如有侵权请立即给我们留言联系,我们将及时处理。
本网站所提供的信息,只供参考之用。本网站不保证信息的准确性、有效性、及时性和完整性。本网站及其雇员一概毋须以任何方式就任何信息传递或传送的失误、不准确或错误,对用户或任何其他人士负任何直接或间接责任。在法律允许的范围内,本网站在此声明,不承担用户或任何人士就使用或未能使用本网站所提供的信息或任何链接所引。

快速评估合适院校
姓名
学历
手机号码
留学院校
寻求帮助
给我们留言
取消发送