首页
登录
职称英语
What’s happening? [br] [originaltext] The first prototype of an aircraft int
What’s happening? [br] [originaltext] The first prototype of an aircraft int
游客
2023-12-14
62
管理
问题
What’s happening? [br]
The first prototype of an aircraft intended to revolutionize travel and shatter speed records was destroyed during its maiden flight on Saturday after a booster rocket carrying it aloft veered out of control and tumbled from the sky.
US space scientists were forced to destroy the unmanned X-43A prototype in midair just minutes before the plane was due to fire the oxygen scooping "scramjet" engine designed to drive it at seven times the speed of sound.
NASA cameras aboard two F-18 chase planes showed the Pegasus rocket careening off course and falling out of control from the sky before controlers triggered on board explosures to destroy it over the Pacific Ocean at about 1:45 pm PDT (4:45 pm EDT/2045 GMT)
Pieces of the booster rocket and the small, black X-43A prototype, part of NASA’ s "Hyper-X" programme, fell into the sea.
选项
A、To revolutionize research and develop speed.
B、To revolutionize travel and shatter speed records.
C、To revolutionize flight and explore outer space.
D、To revolutionize exploration and increase experienc
答案
B
解析
prototype的proto为prefix,意思为"earliest; original"原型的,即:flint or original example of sth that has been or will be copied or developed; model or preliminary version。
转载请注明原文地址:http://tihaiku.com/zcyy/3272596.html
相关试题推荐
GeneralBanKi-moonisurgingtheBurmesegovernmentto[br][originaltext]
GeneralBanKi-moonisurgingtheBurmesegovernmentto[originaltext][7]Th
PresidentObamaisnowfocusingon______[br][originaltext]PresidentObam
PresidentObamaisnowfocusingon______[originaltext]PresidentObamaspen
Itis______thattooktheinitiativeinthemerger?[originaltext]After9hou
ThefollowingpeoplemetMexicanPresidentEXCEPT[br][originaltext]Mexica
ThefollowingpeoplemetMexicanPresidentEXCEPT[originaltext]MexicanPres
Tensionshaveflaredbecause[br][originaltext]Thelatestattack,onanEv
Tensionshaveflaredbecause[originaltext]Thelatestattack,onanEvangeli
WhogatheredinaRomesquareSaturdayfortheFamilyDayrally?[originaltext]D
随机试题
PUBLICNOTICESheratonCollegeintendstoenterintoacontractforconsultings
[originaltext]Babiesbeginlearningontheirfirstdayoflife.(29)Expert
FourCharacteristicsofCultureI.Cultureisshared—Region,climateand【T1】__
ThePresidentexplainedthatthepurposeoftaxationwasto________governmentsp
Tworecentinnovationshavegainedalotofattentionforthewaytheyempow
药物临床试验被批准后,应当什么时间实施A.1年内B.2年内C.3年内D.4年内E
A.属水溶性基质 B.油脂类基质 C.属烃类基质 D.属类脂类基质 E.
有机磷农药中毒患者发生迟发性神经病的主要临床表现为A.脑水肿 B.意识轻度障碍
甲、乙、丙三人各乘一架直升飞机,甲看到楼房匀速上升,乙看到甲匀速上升,丙看到乙匀
背景资料 某政府投资建设的大型市政工程,招标人以公开招标方式自行组织招标,共有
最新回复
(
0
)