首页
登录
职称英语
[originaltext] I wonder how many of you would went to work in a tall building
[originaltext] I wonder how many of you would went to work in a tall building
游客
2024-03-03
42
管理
问题
I wonder how many of you would went to work in a tall building such as the Empire State Building if you had to climb 102 flights of stairs to reach the top. Not many, I imagine. If it were not for the invention of elevators, or lifts, tall buildings would be unusable.
The first lift was just a box suspended on a rope. Using a series of pulleys, a group of oxen ox strong men would pull the rope end lift the box to a higher point. Lifts were used only for heavy materials, not passengers. Even in the nineteenth century, when steam power was used to operate the lifts, people didn’t ride them. They didn’t trust the rope that held the box.
In 1853, Elisha G. Otis invented the first safe lift. He showed his invention in New York at the Crystal Palace Exhibition. At the exhibition, Otis was pulled up in an open box that was attached to two guide mils. When he was lifted far above the spectators, he gave the order to cat the rope. To the amazement of the crowd, the lift did not fall straight downward to the floor. Instead, it was held fast to the guide rails by a certain device. He had built powerful metal clamps on the carriage as a safety measure. The demonstration worked, and people have been riding as passengers in elevators ever since.
选项
A、Disadvantages of tall buildings.
B、Modem elevators.
C、The Crystal Palace Exhibition.
D、The invention of the elevator.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3501217.html
相关试题推荐
[originaltext]M:Let’sjustgooverthearrangementsformytriptoBombay.W:
【B1】[br]【B11】[originaltext]Asummaryofthephysicalandchemicalnatureofl
【B1】[br]【B8】[originaltext]Asummaryofthephysicalandchemicalnatureofli
【B1】[br]【B7】[originaltext]Asummaryofthephysicalandchemicalnatureofli
【B1】[br]【B6】[originaltext]Asummaryofthephysicalandchemicalnatureofli
【B1】[br]【B5】[originaltext]Asummaryofthephysicalandchemicalnatureofli
[originaltext]PresidentBushhasproposedtoincreasethestudyofforeignlang
[originaltext]PresidentBushhasproposedtoincreasethestudyofforeignlang
[originaltext]Everywhere,wateruseisincreasing.Humansalreadyuse54percen
[originaltext]Everywhere,wateruseisincreasing.Humansalreadyuse54percen
随机试题
[originaltext]Afterthedeathofmygrandfather,Igotthegenealogybug.I
Ithasbeenarguedthathighratesofeducationareessentialforcountriest
EffectiveAssignmentsUsingLibraryandInternetResourcesI.Se
Letmeexplainsomeoftheseinmoredetail.First,facialexpression.Facia
Thechair______youaresittingismadeofwood.A、thatB、whichC、whatD、onwhic
对期货公司从业人员提高业务技能方面的管理要求有()。A、加强人员培训B、提高从业人员素质C、健全岗位责任制D、加强经纪人的职业道德教育A,B,
A.知柏地黄丸 B.导赤散 C.加昧五淋散 D.八正散 E.猪苓汤妊娠合
小朋友们听老师讲《西游记》的故事,仿佛看见了孙怡空大闹天宫的情景,这是()
下列下颌侧切牙与上颌侧切牙的区别中哪点是错误的A.下颌侧切牙唇面较平 B.下颌
下列监理文件资料中,需要建设单位审批同意的有()。A、工程开工令 B、工程暂停
最新回复
(
0
)