A、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ascii-font-family: " times="" new="" roman";="" mso-bidi-font-family:="" "times="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa;="" mso-hansi-font-family:="" mso-font-kerning:="" 1.0pt"="">数据报</span>
B、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ascii-font-family: " times="" new="" roman";="" mso-bidi-font-family:="" "times="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa;="" mso-hansi-font-family:="" mso-font-kerning:="" 1.0pt"="">虚电路</span>
C、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ascii-font-family: " times="" new="" roman";="" mso-bidi-font-family:="" "times="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa;="" mso-hansi-font-family:="" mso-font-kerning:="" 1.0pt"="">报文交换</span>
D、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ascii-font-family: " times="" new="" roman";="" mso-bidi-font-family:="" "times="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa;="" mso-hansi-font-family:="" mso-font-kerning:="" 1.0pt"="">线路交换</span>
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