In recent years,TCP/1P has also begun to be used by telephone companies to provide faster, cheaper telephone(74)

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问题 In recent years,TCP/1P has also begun to be used by telephone companies to provide faster, cheaper telephone(74)

选项 A、transmitting
B、transmited
C、transfers
D、transmissions

答案D

解析 最近几年,TCP/IP已经被电信公司使用为用户提供更快速、更廉价的电话通信。
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