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单选题

A______is an independent firm that offers connection and transaction-forwarding services to buyers and sellers engaged in EDI.

AWAN

BLAN

CVPN

DVAN

正确答案:A (备注:此答案有误)

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  • 单选题

    A______is an independent firm that offers connection and transaction-forwarding services to buyers and sellers engaged in EDI.

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