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
自考
In the last fifty years communications throughout the world have been improved greatly. This is because of the telephone, radio
In the last fifty years communications throughout the world have been improved greatly. This is because of the telephone, radio
admin
2010-12-12
47
问题
In the last fifty years communications throughout the world have been improved greatly. This is because of the telephone, radio and television. Recently the use of satellites has increased the speed of communications as well as the distance over which people can communicate. Television pictures can now be sent from one side of the world to the other by means of satellites.
In the world of tomorrow the television will still play an important part. One important development will be a new dialing system. We will be able to pick up our telephone and make a phone call anywhere in the world. Another important development is the "videophone" This telephone will have a small screen on which the speakers will be able to see each other.
The laser beam will also be very helpful to future communications. It has been shown that over seventy television programs can be shown at the same time by means of a single laser beam. The laser beam will also help in the sending of television and telephone messages by satellites.
Computers are also important in communications at present and will become even more important in the future. For example, one large company has over 2, 000 offices, all of which are connected to a single computer. If one of the branch offices wants some information, it sends a demand to the computer center. Here the demand is changed into computer language. Computer language may be different for different kinds of computers. One kind of computer language is in the form of small cards with the patterns of small holes in them. The computer reads the patterns in the cards and then produces the information. This is sent back to the computer center where it is hanged back into ordinary language. Then it is sent on to the office that wanted it.
Scientists have been developing a new form of TV-confravision. In the future when businessmen want to hold a meeting with other businessmen they will use "confravision". In a special meeting room they will be connected by television to other businessmen who may be in another country. They will carry on their meeting as though they were all in the room together.
In tomorrow’s world the speed of communications and amount of material sent and received will be greatly increased. Telephoning a friend on the other side of the world will be like telephoning a friend in the same city; and computers and television meetings will be part of everyday business life.
Confravision is a new kind of______.
选项
A、radio used for sending messages
B、TV used for meeting
C、TV used by businessmen
D、telephone used in a special meeting room
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/9HAR777K
本试题收录于:
英语(二)题库公共课分类
0
英语(二)
公共课
相关试题推荐
发展先进的生产力,是发展先进文化,实现最广大人民根本利益的()
职业的,与职业有关的adj.o___________
Everybodygetssick.Diseaseandinjurymakeussufferthroughoutourlivesuntil,finally,someattackonthebodybringsour
Inthelastfiftyyearscommunicationsthroughouttheworldhavebeenimprovedgreatly.Thisisbecauseofthetelephone,radio
ThecowboyswholivedintheUnitedStatesofAmericabeforethereweregoodroadsorbigmoderncitiesusedtoliveonthehuge
______(tell)thatbadweatherlayahead。theychangedtheircourse.
A.strongdesireforfriendlyrelationshipsB.yourslowperiodsC.dissatisfactionwithyourpersonallifeD.thebasicrequire
Duringthesummerholidaystherewillbeachangedscheduleofservicesforthestudents.Changesfordining-roomandlibraryse
Inrecentyearsadvancesinmedicaltechnologyhavemadeitpossibleforpeopletolivelongerthaninthepast.Newmedicinesa
Itneverrainsbutitpours.Justasbossesandboardshavefinallysortedouttheirworstaccountingandcompliancetroubles,a
随机试题
被判处()以上刑罚的犯罪分子,刑罚执行完毕或者赦免以后,在5年以内再犯应当判处有期徒刑以上刑罚之罪的,才属累犯。
为使药材色泽洁白,防止霉烂,常在干燥前后
雄性北京犬,6岁,一直饲喂自制犬食,近日屡做排尿动作,但无尿液排出。X线检查,膀胱内有大量蚕豆大颗粒状白色阴影,右肾区有大片白色阴影,阴茎骨后部有管状白色阴影。治疗本病时,禁用
若丁、戊类厂房内的油漆工段,当采用封闭喷漆工艺,封闭喷漆空间内保持负压、油漆工段设置可燃气体探测报警系统或自动抑爆系统,且油漆工段占其所在防火分区面积的比例不大于()时,其火灾危险性可按火灾危险性较小的部分确定。
下列有关支票的说法中不符合规定的是()。
《旅游安全管理办法》规定,根据可能对旅游者造成的危害程度、紧急程度和发展态势,风险提示级别分为()。
吴均,今浙江省温州人,创“吴均体”。()
监视居住最长不得超过12个月。()
在面向对象模型中,每一个对象是状态和______的封装。
A、Shedoesn’tneedhishelp.B、Shedoesn’tliketheman.C、Shewantstoworkfortheman.D、Shewantstoaskforhelp.A本题考查对细节的
最新回复
(
0
)