logo - 刷刷题
下载APP
【简答题】

Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in for an unwelcome surprise. The car is fitted with a remote immobilister ( 锁止器 ) , and a radio signal from a control centre miles away will ensure that once the thief switches the engine off, he will not be able to start it again. The idea goes like this. A control box fitted to the car contains a mini-cellphone, a micro-processor and memory, and a GPS ( 全球定位系统 ) satellite positioning receiver. If the car is stolen, a coded cellphone signal will tell the control centre to block the vehicle ’ s engine management system and pr the engine being restarted. In the UK, a set of technical fixes is already life harder for car thieves. “ The pattern of vehicle crime has changed, ” says Martyn Randall, a security expert. He says it would only take him a few minutes to teach a person how to steal a car, using a bare minimum of tools. But only if the car is more than 10 years old. Modern cars are far tougher to steal, as their engine management computer won ’ t allow them to start unless they receive a unique ID code beamed out by the ignition( 点火 ) key. In the UK, technologies like this have helped achieve a 31% drop in vehicle-related crime since 1997. But determined criminals are still managing to find other ways to steal cars, often by getting hold of the owner ’ s keys. And key theft is responsible for 40% of the thefts of vehicles fitted with a tracking system. If the car travels 100 metres without the driver confirming their ID, the system will send a signal to an operations centre that it has been stolen. The hundred metres minimum avoids false alarms due to inaccuracies in the GPS signal. Staff at the centre will then contact the owner to confirm that the car really is missing, and keep police informed of the vehicle ’ s movements via the car ’ s GPS unit.

举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【多选题】关于使用总账系统制单,下列描述中正确的有( )。

A.
可查看任意科目的最新余额
B.
可控制操作员使用科目的权限
C.
凭证可按任意格式的文本文件引入和引出
D.
不能修改和删除其他子系统生成的凭证

【单选题】MG-P使用()定位系统。

A.
GPS+GLONASS
B.
GPS+伽利略
C.
GPS+北斗
D.
GLONASS+北斗

【多选题】全球主流的卫星导航定位系统有哪些()

A.
欧洲的全球卫星导航系统“伽利略(Galileo)”
B.
美国的全球卫星导航系统“GPS”
C.
俄罗斯的全球卫星导航系统“格洛纳斯(GLONASS)”
D.
中国的全球卫星导航系统“北斗系统”

【单选题】我国的全球定位系统名称是()。

A.
GPS导航系统
B.
伽利略导航系统
C.
格洛纳斯导航系统
D.
北斗导航系统

【多选题】电晕对系统的影响有()。

A.
损耗电功率
B.
改变线路参数
C.
对通讯有相当大的影响
D.
没有影响

【单选题】Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in for an unwelcome surprise. The car is fitted with a remote immobiliser (锁止器), and a radio signal from a control ce...

A.
it takes a longer time for the car thief to do the stealing
B.
self-prepared tools are no longer enough for car theft
C.
the thief has to make use of computer technology
D.
the thief has lost interest in stealing cars over 10 years old

【多选题】全球定位系统是利用( )对对象进行动态定位的系统。

A.
卫星星座
B.
地面控制部分
C.
信号发射器
D.
信号接收机
相关题目:
【多选题】关于使用总账系统制单,下列描述中正确的有( )。
A.
可查看任意科目的最新余额
B.
可控制操作员使用科目的权限
C.
凭证可按任意格式的文本文件引入和引出
D.
不能修改和删除其他子系统生成的凭证
【单选题】MG-P使用()定位系统。
A.
GPS+GLONASS
B.
GPS+伽利略
C.
GPS+北斗
D.
GLONASS+北斗
【多选题】全球主流的卫星导航定位系统有哪些()
A.
欧洲的全球卫星导航系统“伽利略(Galileo)”
B.
美国的全球卫星导航系统“GPS”
C.
俄罗斯的全球卫星导航系统“格洛纳斯(GLONASS)”
D.
中国的全球卫星导航系统“北斗系统”
【单选题】我国的全球定位系统名称是()。
A.
GPS导航系统
B.
伽利略导航系统
C.
格洛纳斯导航系统
D.
北斗导航系统
【多选题】电晕对系统的影响有()。
A.
损耗电功率
B.
改变线路参数
C.
对通讯有相当大的影响
D.
没有影响
【单选题】Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in for an unwelcome surprise. The car is fitted with a remote immobiliser (锁止器), and a radio signal from a control ce...
A.
it takes a longer time for the car thief to do the stealing
B.
self-prepared tools are no longer enough for car theft
C.
the thief has to make use of computer technology
D.
the thief has lost interest in stealing cars over 10 years old
【多选题】全球定位系统是利用( )对对象进行动态定位的系统。
A.
卫星星座
B.
地面控制部分
C.
信号发射器
D.
信号接收机