首页
登录
职称英语
Which of the following statements is true? [originaltext] The US space agency
Which of the following statements is true? [originaltext] The US space agency
游客
2023-12-14
43
管理
问题
Which of the following statements is true?
The US space agency NASA says it has discovered another problem with the space shuttle Discovery and astronauts may need to repair the spacecraft before it can safely return to earth.
Mission controllers say they are comfortable that Discovery’s protective heat tiles are in good shape for landing but they remain concerned about the gap filler, a material between and underneath the tiles that seals them and reduces friction, protecting the orbiter from the searing heat of reentry into earth’s atmosphere. The gap filler is protruding in some areas and shuttle lead flight director Paul Hill says engineers are trying to come up with some answers. There are a team of engineers that are working aggressively at options to go and make that gap filler safe if it is decided that it’s an issue and there is another team of engineers that are off looking at the aero-heating and the effects of leaving those gap fillers in place and protruding. Final results are expected to be obtained on aero-heating and a decision on whether anything needs to be done about the gap fillers on Monday. Meanwhile NASA spokesman Rob Navias says the space shuttle Atlantis is standing by to perform a rescue mission if necessary.
选项
A、There are two groups of engineers who are working on the alternative solutions of the program.
B、Discovery’s protective heat tiles ate out of order.
C、NASA has made the decision on whether anything needs to be done about the gap fillers.
D、According to NASA there is only a problem with Discovery and it can return to the earth safely.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3272971.html
相关试题推荐
[originaltext]OfficialsinnorthernBrazilsayafour-dayriotatanotoriou
[originaltext]W:Hi,Leigh,goodtoseeyou.M:Thankyou.W:Hmm,thatsounds
[originaltext]W:Hi,Leigh,goodtoseeyou.M:Thankyou.W:Hmm,thatsounds
[originaltext]W:Hi,Leigh,goodtoseeyou.M:Thankyou.W:Hmm,thatsounds
[originaltext]TheGermanParliamentwillshortlyholdavoteofconfidencei
[originaltext]Americanscientistsaremakingafirstattempttofireaproje
Haveyouheardofthelegendoftheround-tableknights?Whichofthefollowing
[originaltext]RussianMilitarysaysitwillretaliateforaChechenrebelam
[originaltext]FormerItalianPrimeMinisterSilvoBerlusconihascalledon
[originaltext]ArmyexplosiveexpertsinNorthernIrelandhavecarriedouta
随机试题
Byusingthecreditcard,peoplenolongerneedcarryaboutlargesumsofmoney
A—freestyleB—freestylerelayC—waterpoloD—10mplatformeventE—individualev
Henrywentthroughthedocumentsagaincarefully_____________________(唯恐漏看任何重要数
设x是f(x)的一个原函数,则f(x)=
钢质金属基材防眩板热固性涂层单涂层厚度为()。A.0.056~0.130mm
泻白散的组成药物中不含有A.桑白皮 B.炙甘草 C.杏仁 D.地骨皮 E
"热者寒之"治则,所体现的阴阳关系是()A.阴阳消长 B.阴阳对立 C
治疗胃溃疡的药物西咪替丁的作用是A:解除平滑肌痉挛 B:兴奋中枢 C:抗变态
真菌生长的最适温度是A.26~32℃ B.22~28℃ C.20~25℃
高分化癌是指<P>A.分化细胞接近正常,恶性度低<br>B.分化细胞核分裂较多,
最新回复
(
0
)