单项选择题

Despite their varied designs, navigation computers used in cars ______.

A．are more or ness the same price
B．provide directions in much the same way
C．work on more or less the same principles
D．receive instructions from the same satellites

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热门试题

单项选择题

The navigation systems in cars like Lexus, BMW and Audi are mentioned to show ______.

A．the immaturity of the new technology
B．the superiority of the global positioning system
C．the cause of price fluctuations in car equipment
D．the different ways of providing guidance to the driver

单项选择题

It is important for specialists to be able to travel because ______.

A．there are so many people working in similar fields
B．there is a lot of social unrest at universities
C．their follow experts are scattered round the world
D．their laboratories are in remote places