首页
登录
职称英语
【B1】 [br] 【B4】 [originaltext] Once regarded as an expensive status symbol, th
【B1】 [br] 【B4】 [originaltext] Once regarded as an expensive status symbol, th
游客
2024-03-04
19
管理
问题
【B1】 [br] 【B4】
Once regarded as an expensive status symbol, the cellular telephone has become a popular crime-fighting and safety tool for drivers. Every month, people with car phones make 600,000 calls to emergency numbers, reporting not only drunken driving but also such crimes as drug deals, burglaries and car jackings. "They are our eyes and ears," says Dennis Martin, executive director of the National Association of Chiefs of Police.
Some car phones are installed permanently, drawing power from the vehicle’s battery. Others are portable, powered by the car’s cigarette lighter or by an internal, rechargeable battery. But all operate the same way. Dialing a cellular phone sends a radio signal to the telephone company tower covering that geographic area, or cell site. When a driver begins moving out of one cell site, a telephone company computer senses the weakening signal and automatically passes the call to the next tower. With about 13,000 towers in operation, 97 percent of the population lies within range of cellular service. When car phones first appeared, some police officials worried that drivers using them would not pay attention to the road and would get in accidents. In fact, the phones are making the roads safer, particularly against the danger of drunken drivers. And police are now cooperating with initiatives involving cellular phones.
选项
答案
executive
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3505653.html
相关试题推荐
[originaltext]ImagineyouarewatchingtheNBAFinals,thereis1.5second
[originaltext]Manypeoplewhodrinkalcoholalsoliketosmokecigarettes.
[originaltext]Moderator:Hello,ladiesandgentlemen,itgivesmeagre
[originaltext]AnewprogramcalledAdelanTECHLeadershipishelpingstudent
[originaltext]AnewprogramcalledAdelanTECHLeadershipishelpingstudent
[originaltext]Teenagershavefewerfriendsthan20yearsago,researchhas
[originaltext]Teenagershavefewerfriendsthan20yearsago,researchhas
[originaltext]Teenagershavefewerfriendsthan20yearsago,researchhas
[originaltext]M:Excuseme,Iwonderifyoucouldhelpme?W:Ofcourse.Howca
[originaltext]M:Excuseme,Iwonderifyoucouldhelpme?W:Ofcourse.Howca
随机试题
【T1】近日《牛津词典》公布了2019年度词汇——“气候紧急状态”(declare)。这一词汇的使用率在2019年增加了100倍。据称,当人们谈论气候
盈利makeprofit
[originaltext]M:HaveyouheardthatPeter’svacationplanswentupinsmokewh
【教学过程】 (一)新课导入 播放歌曲《好日子》一段MTV,调动学生学习热情,使他们充分进入喜庆气氛之中。 从而导出课题:节日欢歌——音乐欣赏《春节序曲》
坐标式尺寸标注的形式的优点是各尺寸不会产生累积误差。()
阅读下列说明,回答问题1至问题3,将解答填入对应栏内。【说明】某快递公司
男性,35岁。肝区疼痛,低热,周身乏力5个月,偶饮酒。查体:肝肋下3cm,质硬。
呼吸道隔离的标志的颜色是( )。A.橙色 B.绿色 C.棕色 D.蓝色
遵义会议就红军未能粉碎敌人第五次“围剿”、损失惨重的主要原因展开了激烈的争论,多
行政诉讼受案范围是行政诉讼制度中的重要问题。下列哪些属于行政诉讼受案范围:A.王
最新回复
(
0
)