题目内容

Which one is the carrier that have not mentioned in this article ( )?

A. Verizon,
B. T-Mobile and
C. AT&T
D. Sprint

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What is the speeds of 5G ( )?

A. 1Kbps to 100Kbps
B. 1Mbps to 100Mbps
C. 10Mbps to 100Mbps
D. 1000Mbps to 10Gbps

The following things can be appeared in 5G period except ( ).

Artificial Intelligence
B. Internet of Things
C. Wireless Base Station
D. Internet of Vehicles

楼宇对讲系统的核心部分由_____、_、________组成，此三部分由层间适配器和联网切换器进行衔接。

室内住户机具有电锁控制功能和监视功能，一般安装在用户家里的门口处，主要方便住户与_______对讲交谈。