首页
登录
职称英语
[originaltext] The very success of satellite communications systems has rais
[originaltext] The very success of satellite communications systems has rais
游客
2024-02-14
91
管理
问题
The very success of satellite communications systems has raised widespread concern about their future. Some countries are already using satellites for domestic communications in place of conventional telephone lines on land. Although this technique is extremely useful for linking widely scattered villages in remote or mountainous regions, in heavily built-up areas where extensive telephone and telegraph systems already exist, domestic satellites are seen by the land-line networks as unfair competition. Despite such opposition, domestic satellites are gaining support from many businesses and public interest groups in the United States and seem likely to be more widely utilized in the future.
选项
A、They can be built to be very light.
B、They are inexpensive to operate.
C、They can be directed by remote control.
D、They easily connect distant points.
答案
D
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3450144.html
相关试题推荐
[originaltext]M:Hi,Mary.Doyouwanttostartwritingalabreportafterwef
[originaltext]W:Hello,Gary.How’reyou?M:Fine!Andyourself?W:Can’tcomp
[originaltext]W:Hello,Gary.How’reyou?M:Fine!Andyourself?W:Can’tcomp
[originaltext]InmanyAmericanuniversitiesthetotalworkforadegreecon
[originaltext]RobertEdwardswasblindedinanautomobileaccidenttrineye
[originaltext]RobertEdwardswasblindedinanautomobileaccidenttrineye
[originaltext]Guidedogsaretrainedforthepurposeofguidingablindper
[originaltext]W:Doyouthinkfamilieshavechangedmuchinthelast50years?
[originaltext]W:Doyouthinkfamilieshavechangedmuchinthelast50years?
[originaltext]Reporter:So,David,youworkforacompanythatmakesdyesforp
随机试题
Lookatthefollowingstatements(Questions5-9)andthelistofpeopleinthebox
Whatistheletterfor?Toapply______.[br]Whydidhedislikethejob?Beca
[originaltext]Oneimportantthingaboutartmovementsisthattheirpopular
某高速公路隧道土建结构评分85,机电设施评分95,其他工程设施评分98,该隧道总
治疗黏液性水肿应选用()A.甲状腺激素 B.卡比马唑 C.丙硫氧嘧啶
“我们敢说日常所见的人中,十分之九都是他们的教育所决定。”这一观点出自()。A
下列说法中正确的是()A.石油的分馏和煤的干馏都是物理变化 B.油脂、淀粉、
一项新研究显示,中国的消费升级正在延续。所谓消费升级指消费者对更能满足自己美好物
甲、乙两村粮食平均亩产量分别为1000千克和1250千克,标准差分别为45千克和
有左室流出道梗阻的肥厚型心肌病A.患者血压明显升高,体检:血压200/130mm
最新回复
(
0
)