题型:判断题 Think and choose.(认真思考,选出恰当的答案) A. go to school B. go home C. go to bed D. get up1. It's 6:00 a.m. It's time to _______(起床).2. It's 7:10 a. m. It's time to_______(上学). 3. It's 4:35 p. m. It's time to_______(回家). 4. It's 9:05 p. m. It's time to _______(睡觉). 查看答案
题型:判断题 下面关于数字签名的说法中,不正确的是______。A.数字签名可以保证数据的完整性 B.发送方无法否认自己签发的消息C.接收方可以得到发送方的私钥 D.接收方可以确认发送方的身份 查看答案