可采用回密与数字签名技术来保证邮件安全,目前最流行的方法是PGP技术,它是基于()加 发布时间:2017-08-01 00:08 │ 来源:www.tikuol.com 题型:填空题 问题: 可采用回密与数字签名技术来保证邮件安全,目前最流行的方法是PGP技术,它是基于()加密技术的邮件加密系统。
题型:填空题 This river is seriously polluted now,but once inside it ______. [ ]A. there lived many fishes B. lived many fishes C. where lived many fishes D. that lived many fishes 查看答案