首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Look at the ten statements for this part. You will hear a man talking about "The Wright Brothers ". Decide whether you t
Look at the ten statements for this part. You will hear a man talking about "The Wright Brothers ". Decide whether you t
admin
2018-05-13
86
问题
Look at the ten statements for this part.
You will hear a man talking about "The Wright Brothers ".
Decide whether you think each statement is right(R), wrong(W)or not mentioned(NM).
The first piloted glider weighed 50 pound.
Look at the ten statements for this part.
You will hear a man talking about the Wright Brothers.
Decide whether you think each statement is right(R), wrong(W)or not mentioned(NM).
In 1899, the Wright Brothers designed their first aircraft: a small, biplane glider. The Wright Brothers spent a great deal of time observing birds in flight. They noticed that birds soared into the wind and that the air flowing over the curved surface of their wings created lift. Birds change the shape of their wings to turn and maneuver. They believed that they could use this technique to obtain roll control by warping, or changing the shape, of a portion of the wing.
Over the next three years, Wilbur and his brother Orville designed a series of gliders which were flown in both unmanned and piloted flights. They recognized that control of the flying aircraft would be the most crucial and hardest problem to solve.
Following a successful glider test, the Wrights built and tested a full-size glider. In 1900, the Wrights successfully tested their new 50-pound biplane glider in both unmanned and piloted flights. In fact, it was the first piloted glider. Based upon the results, the Wright Brothers planned to refine the controls and landing gear, and build a bigger glider.
In 1901, the Wright Brothers flew the largest glider ever flown. Many problems occurred. The Wrights reviewed their test results and decided to build a wind tunnel to test a variety of wing shapes and their effect on lift. Based upon these tests, they planned to design a new glider with a 32-foot wingspan and a tail to help stabilize it.
During 1902, the brothers flew numerous test glides using their new glider. With successful glides to verify their wind tunnel tests, the inventors planned to build a powered aircraft. After months of studying how propellers work the Wright Brothers designed a motor and a new aircraft. The craft weighed 700 pounds and came to be known as the Flyer.
After two attempts to fly this machine, one of which resulted in a minor crash, Orville Wright took the Flyer for a 12-second, sustained flight on December 17,1903. This was the first successful, powered, piloted flight in history.
In 1904, the first flight lasting more than five minutes took place on November 9. The Flyer II was flown by Wilbur Wright.
That is the end of Part 3. You now have 20 seconds to copy your answers onto the Answer Sheet.
选项
A、Right
B、Wrong
C、Not Mentioned
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/Uo2d777K
本试题收录于:
BFT听力题库国际化人才外语考试(BFT)分类
0
BFT听力
国际化人才外语考试(BFT)
相关试题推荐
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement:Trafficandhousingpro
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement:Trafficandhousingpro
Youhaveapart-timejobinabookshop.Themanagerwantstomaketheshopmorepopularamongyoungpeopleandasksyoutowrite
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Readthearticlebelow.Choosethebestsentencefromthelistonthenextpagetofilleachofthegaps.Foreachgap(1
CONVERSATION2(Questions5-8)MESSAGEProblem:Therewasa【L5】______problem.Mr.Franks’companyha
CONVERSATION2(Questions5-8)MESSAGEProblem:Therewasa【L5】______problem.Mr.Franks’companyha
RECORDEDMESSAGE(Questions5-8)MessagefromTed-TradeFairNew【L5】______isverypopular.Mostorderstakenfor【L6】___
Youwillhearaconversationandrecordedmessage.Writedownonewordornumberineachofthenumberedspacesontheforms
随机试题
某企业实收资本50万元;资本公积10万元;盈余公积6万元;未分配利润5万元。经批准用资本公积转增资本10万元后的所有者权益总额为()
患者女,60岁。患肝硬化3年,现呕血300ml,心慌乏力,脉搏细速。体检:精神萎靡、皮肤干燥,体温36.7℃,脉搏100次/分,呼吸24次/分,血压80/60mmHg。属于主观资料的是()
芬太尼注射后易形成第二次血药浓度峰值,其原因不包括
某司机在驾车行驶过程中,故意闯红灯,对于该行为,司机应受到()
某5年期、面额100元的债券,以80元的价格贴现发行,其票面收益率为()。
1955年8月至1978年5月属于劳动教养制度的初期发展阶段。()
显微根管治疗在哪些方面较常规治疗技术更具优势()。
theappleofone’seye
注册表是Windows98存储各种软硬件配置信息的“仓库”。在下列有关Windows98注册表的叙述中,错误的是
A、Engineersstayawayfromcustomers.B、Engineersunderstandcustomers’needs.C、Engineersarewillingtofacecustomers.D、Engi
最新回复
(
0
)