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
91
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://kaotiyun.com/show/Fo2d777K
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
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingtopic:Tea
Agreatnumberofpeoplethinkthatthosewithuniversityeducationshouldgethigherpaythanthosewithout,fortheybelievet
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement:Trafficandhousingpro
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Readthefollowingtextanddecidewhichanswerbestfitseachspace.Forquestions26-45,markoneletterA,B,CorDony
Reebokexecutivesdonotliketoheartheirstylishathleticshoescalled"footwearforyuppies".TheycontendthatReebokshoes
CONVERSATION2(Questions5-8)MESSAGEProblem:Therewasa【L5】______problem.Mr.Franks’companyha
CONVERSATION2(Questions5-8)DiscountsforGymCoursesWehavediscountsfor【L5】______students.For
随机试题
简述劳动法律关系的特征。
Ihopethatyou’llbemorecarefulintypingtheletter.Don’t______anything.
女性,60岁,因突发性右上腹痛8小时人院。查体:体温38.5℃,心率90次/分,血压110/80mmHg,右上腹压痛,肌紧张。WBCl6×109/L。B超提示胆囊增大壁厚,内有结石多个,胆总管直径1.2cm。拟行急诊手术,此病人应选择的手术方式是
女性,16岁。昨晚餐吃剩饭一碗与排骨一块,当夜中上腹有阵发性疼痛,伴有恶心、呕吐就诊。无发热。体检:上腹部有压痛,肠鸣音较活跃,白细胞总数、分类及大便常规检查正常,最可能的诊断是
()是控制职业性危害因素,保护从业人员健康的重要措施,也是对建设项目实施作业场所卫生监督的重要依据。
某会展中心工程地上2层,建筑高度为24m,总建筑面积98000m2,钢桁架结构,耐火等级一级。该建筑一层层高12m,建筑面积85400m2,主要使用性质为登录大厅、主会议厅、六个展览厅、厨房及设备用房;二层建筑面积12600m2,主要使用性质为会议室及设备
( )的鉴重及合同规定凭卸货口岸检验检疫机构的品质、重量检验证书作为计算价格、结算货款的货物,应向口岸或到达地检验检疫机构报检。
道氏理论认为在所有价格中,股票的开盘价是最重要的价格。()
在商业银行的风险管理信息系统中,经过分析和处理的风险信息/数据通常分为()。
该公司11月份销量为4万元,则该月盈亏情况是( )。若计划月盈利达10万元,每月产品销售量不得少于______。
最新回复
(
0
)