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【判断题】
GPS，即全球定位系统，它是利用分布在约2万公里高空的多颗卫星对地面目标的状况进行精确测定以进行定位、导航的系统。
A.
正确
B.
错误
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【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】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