单项选择题

Why does the tracking system set a 100-metre minimum before sending an alarm to the operations centre

A．To leave time for the operations centre to give un alarm.
B．To keep police informed of the car's movements.
C．To give the driver time to contact the operations centre.
D．To allow for possible errors in the GPS system.

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热门试题

单项选择题

What's the function of the remote immobilizer fitted to a car

A．To help the police make a surprise attack on the car thief.
B．To allow the car to lock automatically when stolen.
C．To prevent the car thief from restarting it once it stops.
D．To prevent car theft by sending a radio signal to the car owner.

单项选择题

By saying ... the prophecy becomes self-fulfilling... (Lines 45. Para. 2), the author means that ______.

A．girls will turn out to be less valuable than boys
B．girls will be capable of realizing their own dreams
C．girls will eventually find their goals in life beyond reach
D．girls will be increasingly discontented with their life at home