2. 计算机
  3. E-checks require digital______and authentication services to digitally process information between the payer payee,and bank．

E-checks require digital______and authentication services to digitally process information between the payer payee,and bank．

admin2010-12-16  49
问题 E-checks require digital______and authentication services to digitally process information between the payer payee,and bank．
选项 A、signatures
B、message
C、document
D、encrypt
答案A
解析 电子支票需要买、卖双方和银行之间的受支付数字签名和认证服务。
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