开放系统互联参考模型（OCI）有物理层、数据链路层、网络层、传

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问题单项选择题

开放系统互联参考模型（OCI）有物理层、数据链路层、网络层、传输层、表示层、应用层和（）。

A.业务层

B.网络接口层

C.会话层

D.WeB层

答案

参考答案：C

选择题

Not only _______interested in football but ______beginning to show an interest in it.

A．the teacher himself is; all his students are

B．the teacher himself is; are all his students

C．is the teacher himself ; are all his students

D．is the teacher himself; all his students are

名词解释

读破