单项选择题
A.VLRISD B.LACOD C.LAI D.CI
A.MCC+MNC+SN B.CC+NDC+MSIN C.MCC+MNC+MSIN
A.MOBINTER B.MOBBOTH C.MOBPHA D.MOBPHB
A.IPX B.NO.7 C.TCP/IP D.X.25
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