首页
登录
职称英语
Navigation computers, now sold by most car makers, cost $2000 and up. No su
Navigation computers, now sold by most car makers, cost $2000 and up. No su
游客
2023-11-07
15
管理
问题
Navigation computers, now sold by most car makers, cost $2000 and up. No surprise, then, that they are most often found in luxury cars, like Lexus, BMW and Audi. But it is a developing technology meaning prices should eventually drop-and the market does seem to be growing.
Even at current prices, a navigation computer is impressive. It can guide you from point to point in most major cities with precise turn-by-turn directions spoken by a clear human sounding voice, and written on a screen in front of the driver.
The computer works with an antenna that takes signals from no fewer than three of the 24 Global Positioning System (GPS) satellites. By measuring the time required for a signal to travel between the satellites and the antenna, the car’s location earl be pinned down within 100 meters.
The satellite signals, along with inputs on speed from a wheel speed sensor and direction from a meter, determine the car’s position even as it moves. This information is combined with a map database. Streets, landmarks and points of interest are included.
Most systems are basically identical. The differences come in hardware—the way the computer accepts the driver’s request for directions and the way it presents the driving instructions. On most systems, a driver enters a desired address, motorway junction or point of interest via a touch screen or disc. But the Lexus screen goes a step further: you can point to any spot on the map screen and get directions to it.
BMW’s system offers set of cross hairs that can be moved across the map (you have several choices of map scale) to pick a point you’d like to get to. Audi’s screen can be switched to TV reception.
Even the voices that recite the directions can differ, with better systems like BMW’s and Lexus’s having a wider vocabulary. The instructions are available in French, German, Spanish, Dutch and Italian, as well as English. The driver can also choose parameters for determining the route: fastest, shortest or no freeways, for example. [br] The navigation computer functions ______.
选项
A、by means of a direction finder and a speed detector
B、basically on satellite signals and a map database
C、mainly through the reception of turn-by-turn directions
D、by using a screen to display satellite signals
答案
B
解析
推理题。此题考察对第四段的理解。“The satellite signals…determine the car’s position"及"This in formation is combined with a map database"与选项B的表述相吻合,因此为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3165786.html
相关试题推荐
TheU.S.automakersdecidedtostoptheiractionbecause______[originaltext]
Thesecomputersaresoldatsuchalowprice______peopleexpected.A、likeB、asC、
Firmsthatusecomputershavefoundthatthenumberofstaff______isneededfor
TheInternet,cellphones,palmtopcomputersandotherdigitaltechnologyallows
Whatisthepurposeofissuingthenewlaw?[originaltext]LawmakersinNebra
Navigationcomputers,nowsoldbymostcarmakers,cost$2000andup.Nosu
Navigationcomputers,nowsoldbymostcarmakers,cost$2000andup.Nosu
WhathaveUkraine’sNationallawmakersdemanded?[originaltext]Nationallaw
Cancomputersreason?Reasoningrequirestheindividualtotakeagivenset
Cancomputersreason?Reasoningrequirestheindividualtotakeagivenset
随机试题
Aneducationblogthataskedreaderstosendreportsofviolenceinschoolstied
我的树 (俄)屠格涅夫 我收到一位过去的大学同学的来信,他是一个有钱的地主,
传染性单核细胞增多症血象的突出变化是A.淋巴细胞增多 B.嗜碱性粒细胞增多
提出儿童具有吸收性心智观点的教育家是()A.福禄贝尔 B.蒙台梭利 C.皮亚
水行政主管部门和流域管理机构按照()负责水利工程建设安全生产的监督管理。A、属地
以资本资产定价模型为基础的评价基金业绩的绝对指标是指( )。A.詹森指数 B
司法人员恪守司法廉洁,是司法公正与公信的基石和防线。违反有关司法廉洁及禁止规定将
用熔化极氩气气体保护焊焊接铝,镁等金属,为有效去除氧化膜,提高接头焊接质量,应采
关于国际工程招标,下列说法中正确的是()。A.提交标书的方式须加以限制,如
关于留置的说法,正确的是( )。A.留置权属于债权 B.债权人不负责保管留置
最新回复
(
0
)