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
2018-04-17
21
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 tears 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“Computers play an essential role in modern automation in many plants and factories throughout the world.”其中“in modern automation”与A选项对应。
转载请注明原文地址:https://kaotiyun.com/show/8aiC777K
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
ContrarytoitsrathernegativereputationintheWest,pigsinChinesecultureareasignofkindnessandgenerosity.Pigscare
OneBritishschoolisfindingthatallowingchildrentolistentomusicoreventohavetheTVonwhilestudyingishelpingimpr
Onlyoneanimalcanwalk200mileswithoutstoppingoncetorest.Itwouldtakeapersontwodaysandtwonightstowalkthisfa
Alawyerfriendofminehasdevotedherselftotheserviceofhumanity.Herspecialareaiscalled"publicinterestlaw".Ma
Peopleareusedtospeakingtheirnativelanguage,soimmigrantsarehavingmanyproblemsbetweenthefirstgenerationandthes
I’veworkedheresinceI______HarvardBusinessSchool.
Althoughtheworkingmotherisverybusy,shestill______alotoftimetoherchildren.
Readthefollowingdialogueandtrytofillupthegapswithproperwords,phrases,orsentences.Tom:So,tellmeaboutyou
Walkingthroughthedryleavesonhiswayhome,Patthoughtofwhatabaddayinschoolithadbeen.Buteverydaywasabadday
PeopleinBritainarelivinglongerandare【56】,【57】moreandmoremoneyisbeingspentonconsumergoods,【58】thelateststati
随机试题
传统市场经营观具体表现为三种:即______、______、______。
A.四逆散B.逍遥散C.大柴胡汤D.痛泻药方具有“补脾柔肝,祛湿止泻”功用的方是
患者男,28岁,长期便秘,每次排便时间大于30分钟。近来一周:未排便,腹痛腹胀来院就诊,遵医嘱给予大量不保留灌肠。大量不保留灌肠常用的灌肠溶液是
A企业委托B企业代销商品一批,该批商品的含税价格为93600元,代销手续费为含税售价的5%,商品的成本为50000元。A企业收到B企业的代销清单,内列商品销售额为81900元(含税),当即A企业开具增值税专用发票(增值税率为17%)。A企业收到代销单时编制
投机交易减缓价格波动作用的实现是有前提的,包括( )。
国际债券的种类有( )。
在国家风险中,()是债务人由于国家经济原因引起的风险。
现代企业制度的典型形式是()。
A、Morejobopportunitiesareprovidedinjournalism.B、Hergreatuncleworksforapaperasareporter.C、Shepersonallyenjoys
A、Shecan’tseeanysignofitoutside.B、Shedoesn’tbelievetheman.C、Shethinkstheforecasthasnotbeenaccuratethisweek
最新回复
(
0
)