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
43
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).
Not all tests of the 50-pound glider were successful.
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
C
解析
转载请注明原文地址:https://jikaoti.com/ti/ov8sFFFM
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
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Usingtheinformationinthetext,completeeachsentence14-18withanexpressionfromthelistbelow.Foreachsentence(14
Usingtheinformationinthetext,completeeachsentence14-18withanexpressionfromthelistbelow.Foreachsentence(14
Readthearticlebelow.Choosethebestsentencefromthelistonthenextpagetofilleachofthegaps.Foreachgap(1
Readthearticlebelow.Choosethebestsentencefromthelistonthenextpagetofilleachofthegaps.Foreachgap(1
Readthearticlebelow.Choosethebestsentencefromthelistonthenextpagetofilleachofthegaps.Foreachgap(1
Readthefollowingpassageanddecidewhichanswerbestfitseachspace.Forquestions26~45,markoneletterA,B,CorDo
Readthefollowingpassageanddecidewhichanswerbestfitseachspace.Forquestions26~45,markoneletterA,B,CorDo
Readthefollowingpassageanddecidewhichanswerbestfitseachspace.Forquestions26~45,markoneletterA,B,CorDo
随机试题
使用Access2003可以直接操作Exeel工作表中的数据。
TUR综合征形成的原因是()
摄影条件可变因素的叙述,错误的是
当事人李某在二审结束后,对于对他作出的终审判决还是不服,遂于2月1日提出了申诉,再审法院于2月6日作出了再审决定,按照一审程序另组合议庭重新开始审理。请问本次审理的审理时限应如何计算(暂不考虑时限延长的诸多情形)?
某高速公路施工项目,全长60.3km,设计车速为120km/h,路面面层采用水泥混凝土路面施工方法,并采用滑轮式摊铺机进行施工。施工单位项目经理为了确保工程质量,组织有关人员对该工程设置了如下质量控制关键点:(1)基层强度、平整度、高程的检查与控制;(
如果阿根廷参加联盟,则巴西和智利将抵制联盟。如果巴西和智利有一国抵制联盟,那么联盟就会名存实亡,而联盟没有名存实亡。从这段文字可以推出()。
在多元回归的方法中,除下面哪种方法外,各预测源进入回归方程的次序是单纯由统计数据决定的?()
把基层群众自治制度纳入中国特色社会主义民主政治制度的基本范畴,依据是
在当代社会,有序的公共生活对经济社会健康发展的重要意义愈加突出。具体体现在
习近平指出:“新时代中国青年要自觉树立和践行社会主义核心价值观。”培育和践行社会主义核心价值观,既要目标高远,保持定力、不懈奋进,又要脚踏实地,严于律己、精益求精,将社会主义核心价值观转化为人生的价值准则。这就需要我们做到
最新回复
(
0
)