ISDN为了使通信网络内部的变化对终端用户是透明的,它必须提供一个标准的()。

ISDN为了使通信网络内部的变化对终端用户是透明的,它必须提供一个标准的()。A.用户接口B.数据速率体系C.网络接ElD.网络协议体系

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When you're promoted to a new job,chere are a lot of relationships that need rec

When you're promoted to a new job,chere are a lot of relationships that need recalibrating.You have

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对从事国际联网经营活动的接人单位实行()。

对从事国际联网经营活动的接人单位实行()。A.审批制度B.国际联网经营许可证制度C.特惠制度D.登记制度

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As I write these words,a triumphant horn is erupting in my ear over the thythmic

As I write these words,a triumphant horn is erupting in my ear over the thythmic bowing of violins.I

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()是网吧在正式经营之前的必经程序。

()是网吧在正式经营之前的必经程序。A.年审登记制度B.上网登记制度C.审核登记制度

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