题目内容

The third generation mobile communication system (3G) ________.

Adopts analog and frequency division multiple access technology, voice only
B. Adopts digital technology to improve quality and confidentiality
C. Adopts CDMA technology to transmit voice, data and multimedia information
D. Adopts TD-LTE and FDD-LTE technology to quickly transmit multimedia information

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The operating system used by Apple mobile phones is ________.

A. Windows Phone
B. Android
C. IOS
D. Symbian

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________ is not part of the satellite communication system.

A. Satellite
B. Roaming end
C. Ground station
D. Client

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________ belongs to the cellular mobile communication system in the mobile communication network technology is.

A. Wi-Fi
B. WiMax
C. Mobile network
D. Satellite network

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The social marketing of mobile commerce refers to ________.

A. Providing products according to consumer needs
B. Relying on social platforms to acquire users through sharing
C. Recommending products based on user portraits
D. Attracting users through online and offline integration

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