首页
登录
职称英语
What does the speaker say about television signals? [br] [originaltext] CAT
What does the speaker say about television signals? [br] [originaltext] CAT
游客
2024-02-26
58
管理
问题
What does the speaker say about television signals? [br]
CATV is a short way of saying"community antenna television."But"cable television"is the term most people use.Cable television allows viewers to receive TV programs that they cannot pick up with their regular antennas.
Television signals do not follow the curve of the earth.They travel in straight lines in all directions. Signals from a TV station move toward the horizon and then go into space.If you live only a few miles from a station,you may not get any picture at all.
CATV began in 1948.People in places far from TV stations shared the cost of putting up high antennas.A community antenna was usually placed on a hill,a mountain,or on a high tower.The antenna picked up TV signals and fed them into a small local station.From the station,thick wires called cables ran out to nearby homes.Each person using the cable paid a monthly charge.
CATV worked well,and soon new uses were found for it.Local stations could feed programs into empty channels that were not in use.People along the cable could have local news,weather reports,and farm and school news at no extra charge.
Today,cable television has moved into cities.It brings in extra programs that city viewers with regular antennas cannot see.It is also used in many classrooms throughout the country.
选项
A、Pay a monthly charge.
B、Pay a yearly charge.
C、Pay a daily charge.
D、Pay an hourly charge.
答案
A
解析
短文提到,有线电视用户要每月交费,故A正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3484467.html
相关试题推荐
[originaltext]InAmerica,self-improvementisanationalpastime,Everyyea
[originaltext]Atthismomentsome170,000youngpeoplethroughoutBritain
[originaltext]Atthismomentsome170,000youngpeoplethroughoutBritain
[originaltext]Pricesdeterminehowresourcesaretobeused.Theyarealso
[originaltext]W:Youhaveaverygoodstereosystem...Whatafinesounditpr
[originaltext]W:Youhaveaverygoodstereosystem...Whatafinesounditpr
[originaltext]W:Youhaveaverygoodstereosystem...Whatafinesounditpr
[originaltext]Rightuptothe19thCentury,OxfordandCambridgeweretheo
[originaltext]Rightuptothe19thCentury,OxfordandCambridgeweretheo
[originaltext]Findingyourfirstjobcanbebotharewardingandfrustratin
随机试题
Everytimeanoldbuildingistorndowninthiscountry,andanewbuilding
ThePrimeMinisterrefusedto______ontherumorthathehadplannedtoresign.A
TodayIwouldliketotalkabouttheearlydaysofmoviemakinginthelate
若要开机即启动某应用程序,只需为该应用程序创建一快捷方式,并把它放在:A.开始菜
病人口开而不闭,状如鱼口,但出不入,属A.脾虚湿盛B.热极生风C.肺气将绝D.心
17、2005年4月某电厂500kV升压站2台设备套管发生严重的降水降雪型快速积
2016年前11个月,江浙地区原煤产量占全国的比重约为( )。A.2.1‰
关于性角色问题的分类,下列说法中正确的是()。 (A)易性癖属于性角色认同失
在人力资源需求预测方法中,属于定性的主观判断法有()。A.经验判断法 B.比
某企业2020年8月份购入一台不需安装的设备,因暂时不需用,截至当年年底该企业会
最新回复
(
0
)