A()is an independent firm that offers connection and transaction-forwarding services to b

计算机 已帮助 人

A()is an independent firm that offers connection and transaction-forwarding services to buyers and sellers engaged in EDI.

A.WAN B.LAN C.VPN D.VAN

请帮忙给出正确答案和分析,谢谢!

热搜:n维列向量组a1,an-1线性无关,且与非零向量正交