首页
登录
职称英语
An American inventor, Dean Kamen, says he has invented the world’ s first se
An American inventor, Dean Kamen, says he has invented the world’ s first se
游客
2024-01-18
74
管理
问题
An American inventor, Dean Kamen, says he has invented the world’ s first self -balancing individual transport vehicle called the Segway Human Transporter.
The Segway looks like a long stick with two wheels. The stick has handles for a person to hold while the wheels are connected by a platform. The person stands on the platform and holds the handles and turns them to go left or right. The vehicle moves forward or backward when the person moves his body in that direction.
The Segway has computers and gyroscope devices to make it move and balance. It is powered by batteries that can be re-charged in a few hours by using an electric outlet. It can travel at a speed of nineteen kilometers per hour, cost less than ten cents a day to operate.
Mister Kamen says the Segway could replace cars in crowded city centers because it was designed to reduce pollution and solve other environmental problems in cities. However, it was not designed to travel on roads.
Mister Kamen is a successful inventor and president of the DEKA Research and Development Company near Manchester, New Hampshire. He has invented about one -hundred other device, including some important medical devices such as an insulin pump for people with diabetes, a device to open blocked blood vessels in the heart and a wheelchair that can move up steps.
The Segway will be for sale to the public next year at about three - thousand dollars. Several businesses are testing the vehicle now, including the United States Postal Service and the bookseller Amazon dot com. Some letter carriers will try riding the vehicles to deliver the mail. Amazon workers will use them to find books in their huge storage buildings. Police in two cities also will test the vehicles to see if they can be used for law enforcement.
Some technology experts have criticized the Segway vehicle for being potentially dangerous to ride and for not protecting the rider from bad weather. They say it holds only one person while other small vehicles can hold three people. And some people may use the vehicle to avoid walking and getting exercise. However, other experts say the vehicle is interesting and could be used in many ways in the future. [br] The passage is mainly written to______.
选项
A、discuss how people view a new invention
B、analyze how a new invention changes our lives
C、show the necessity for a new invention
D、introduce a new invention to the public
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3371999.html
相关试题推荐
HenryFord,thefamousU.S.inventorandcarmanufacturer,oncesaid,"The
HenryFord,thefamousU.S.inventorandcarmanufacturer,oncesaid,"The
HenryFord,thefamousU.S.inventorandcarmanufacturer,oncesaid,"The
HenryFord,thefamousU.S.inventorandcarmanufacturer,oncesaid,"The
LivinginthecentralAmericandeserthasitsproblems,______obtainingwateri
ItisreportedthattheAmericanMedicalAssociationhascalledforthesportof
TheAmericandefinitionofsuccessislargelyoneofacquiringwealthanda
TheAmericandefinitionofsuccessislargelyoneofacquiringwealthanda
TheAmericandefinitionofsuccessislargelyoneofacquiringwealthanda
TheAmericandefinitionofsuccessislargelyoneofacquiringwealthanda
随机试题
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
WhowontheWorldCup1994footballgame?WhathappenedattheUnitedNation
下列选项中不属于基于BIM的土建结构深化设计内容的是()。A.门窗等构件施工图
将高级语言源程序翻译为可在计算机上执行的形式有多种不同的方式,其中()。A.编
A.尿频尿急,尿道灼痛,尿黄短少 B.头痛目赤,急躁易怒,胁痛便秘 C.腹部
某消防工程中单位在消火栓系统安装结束后对系统进行调试,根据现行国家标准《消防给水
我国对个体农业实行社会主义改造必须遵循的原则有( )。A.自愿互利 B.
3月24日,某期货合约价格为702美分/蒲式耳,某投资者卖出5份执行价格为760
(2018年真题)根据《票据法》的规定,票据持有人有下列()情形,不得享有票据
由单个继电器构成的继电器屏,各类继电器宜按由上至下的布置顺序为()。 A.时间
最新回复
(
0
)