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
2017-09-04
58
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 use of computers for specialized purposes depends on the_________.
选项
A、design of computer
B、power used to operate the computer
C、difficulty of the mathematical calculations involved
D、the ability of the programmer
答案
A
解析
文章第三段第一句话说到“Computers can be designed for many specialized purposes—they can be used to prepare payrolls,guide airplane flights,direct traffic,even play chess.”可推知电脑可以被设计用于不同的目的,因此正确答案为A。
转载请注明原文地址:https://kaotiyun.com/show/XYiC777K
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
Readthefollowingdialogueandtrytofillupthegapswithproperwords,phrases,orsentences.SalesAssoc:Hi,areyoub
Nooneistrulygreatbuthewhoservesthepeopleheartandsoul.
Workingonanewspaperisaverybusyjob.Manynewspapers【21】eachday,andtheyhaveto【22】peoplewithallthelatestnews.The
Pickouttheappropriateexpressionsfromtheeightchoicesbelowandcompletethefollowingdialoguesbyblackeningthecorresp
Nowadaysmostpeopledecidequite【61】whatkindofworktheywoulddo.WhenIwasatschool,wehadtochoose【62】whenwewerefif
Muchofaparent’sjobistoprovidethegiftsofcaring,love,andemotionalsupporttochildren.Butonegiftisoftenbeyond
Pickouttheappropriateexpressionsfromtheeightchoicesbelowandcompetethefollowingdialoguesbyblackeningthecorrespo
Onlyoneanimalcanwalk200mileswithoutstoppingoncetorest.Itwouldtakeapersontwodaysandtwonightstowalkthisfa
Howmenfirstlearnedtoinventwordsisunknown;inotherwords,theoriginoflanguageisamystery.Allwereallyknowistha
Readthefollowingdialogueandtrytofillupthegapswithproperwords,phrases,orsentences.Tom:So,tellmeaboutyou
随机试题
对分娩启动没有关系的是
A.温经散寒调经B.补血益气调经C.扶阳祛寒调经D.补肾养血调经E.补肾健脾调经肾虚型月经后期的治法是()
恒定混合策略在下降时买人股票并在上升时卖出股票,其支付曲线为凹型。
委托贷款的资金由()提供。
下列税收中,属于从量税的有()。
某中学的学生小刘家庭经济困难,他觉得自己上学会加重家庭经济负担,因此想要辍学去打工。社会工作者因此介入为其提供服务,在选择介入行动时应该首先选择( )。
需要进行转介的情况不包括()。
将11车相同的扶贫物资发往甲、乙、丙、丁和戊五个乡。要求至少送往其中的4个乡,每个乡送整数车且不超过3车。问共有多少种不同的发放方式?
2017年上半年,全国居民人均可支配收入12932元,比上年同期名义增长8.8%。其中,城镇居民人均可支配收入18322元,增长8.1%(以下如无特别说明,均为同比名义增长);农村居民人均可支配收入6562元,增长8.5%。按收入来源分,2017
Amway(China)DailyNecessitiesCompanyLimitedAmwayisaleadinginternationalcompanyengagedindailynecessities(必需品)wi
最新回复
(
0
)