A______is an independent firm that offer

练习题库2022-08-02 47

问题 A______is an independent firm that offers connection and transaction-forwarding services to buyers and sellers engaged in EDI.A.WANB.LANC.VPND.VAN

选项 A.WAN
B.LAN
C.VPN
D.VAN

答案 D

解析

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