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
专升本
A computer is a machine designed to perform work mathematically and to store and select information that has been fed into it. I
A computer is a machine designed to perform work mathematically and to store and select information that has been fed into it. I
admin
2015-10-30
48
问题
A computer is a machine designed to perform work mathematically and to store and select information that has been fed into it. It is run by either mechanical or electronic means. These machines can do a great deal of complicated work in a very short time. A large computer, for example, can add or subtract nine thousand times a second, multiply a thousand times a second, or divide five hundred times a second. Its percentage of error is about one in a billion digits . It has been estimated that human beings making calculations average about one mistake per two hundred digits.
The heart of an electronic computer lies in its vacuum tubes, or transistors. Its electronic circuits work a thousand times faster than the nerve cells in the human brain.
A problem that might take a human being two years to solve can be solved by a computer in one minute, but in order to work properly, a computer must be given instructions—it must be programmed.
Computers can be designed for many specialized purposes—they can be used to prepare payrolls, guide airplane flights, direct traffic, even play chess. Computers play an essential role in modern automation in many plants and factories throughout the world.
The selection says that computers play an essential roles in ______.
选项
A、automation processes
B、mathematical computations
C、traffic control
D、the development of mathematical theory
答案
A
解析
文章第三段最后一句说到“Computersplay an essential role in modern automation in manyplants and factories throughout the world.”其中“inmodern automation”与A选项对应。
转载请注明原文地址:https://kaotiyun.com/show/pNYC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
OnthefourthThursdayofNovember,everyyear,AmericanscelebrateThanksgivingDay.Thedayisanationalholidaywhichisset
Ayoungwomanrodewithhernewhusbandinawagon(四轮马车).Theycametoalogcabin(小棚屋).Themallshoutedandalittleboycame
(77)Inwhatnowseemsliketheprehistorictimesofcomputerhistory,theearlypost-warera(战后时期)therewasaquitewidesprea
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforthenormalgrowthandmaintenanceoflifeofanimals,
IntheUnitedStatesthemostpopularformoffolkdancingsincetheearlydayshasbeensquaredancing.Inearlytimes,whenme
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourfutureenergyneeds?Thesearetwoimportantque
Feelingtiredlately?Hasthedoctorsaidhecannotfindanythingwrongwithyou?Perhapshesentyoutoahospital,butallthe
Americansareproudoftheirvarietyandindividuality,yettheyloveandrespectfewthingsmorethanauniform,whetheritis
Agroupofscientistsrowingtowardthecenterofalakesawsomethingshocking.Theyturnedbackasfastastheycould.Whatha
Acomputercompanyhasaspecialpersonwhoanswersallquestionsthataresenttohim.Thepersonisa63yearoldman.Heisk
随机试题
A.3秒B.10~20秒C.30~45秒D.4~6分钟E.10分钟
治疗瘀血阻滞型不孕症,应首选的方剂是
下列说法不属于系统误差产生的原因的是
针对一个没有行使的新工程或工程内容及其技术经济指标尚未全面确定的新项目,一般采用( )。
如果经纪商没有根据委托合同限定的证券种类、数量、价格、期限执行,投资者可拒绝接受,并有权要求赔偿。()
2,2,4,6,10,(),26
19世纪70年代以后,王韬、薛福成、马建忠、郑观应等人不仅主张学习西方的科学技术,同时也要求吸纳西方的政治、经济学说。他们的共同特点是具有
某企业有电信和联通2条互联网接入线路,通过部署①可以实现内部用户通过电信信道访问电信目的IP地址,通过联通信道访问联通目的IP地址。也可以配置基于②的策略路由,实现行政部和财务部通过电信信道访问互联网,市场部和研发部通过联通信道访问互联网。
AnAwfulAfternoonSometimesIfeelthatbeingthemotherofthreesmallchildrenislikerunningalargecircus(马戏团).Onea
"ConquestbyPatents"Patentsareaformofintellectualpropertyrightsoftentoutedasameanstogive’incentiveandrewar
最新回复
(
0
)