题目内容
可以认为数据的加密和解密是对数据进行的某种变换，加密和制者的过程都是在（）的控制下进行的。
查看答案
搜索结果不匹配？点我反馈
更多问题
数字签名为保证其不可更改性，双方约定使用（）。
（）是网络通信中标志通信各方身份信息的一系列数据，上发证身份的方式。
11/22/2014our class did (1) _______ a research project into human behavior. Some teachers did (2)_____a lecture on the topic "What makes a hero?" The topic has aroused great interest among students on campus. The weblog has been updated almost every minute, which involves even students from other departments, students who preferred not to do (3) _______any course in the humanities. People have made (4)______ the phrase everyday heores for those ordinary people who sacrifice themselves for others at the moment of life and death. The inspiring stories of the heroes have made (5) ______ a vivd and moving impression on all of us.
12/02/2014Lately I've been thinking about everyday heroes. There really are many heroes among us who make (1)___________ an effort to find ways to make the world different. We may know some of them, but I assume that most of them we've never heard of. I read a weblog article a few days ago. the author made (2)_______remarks that the guy who finds a lost wallet and returns it to the owner is called a hero. Similarly, the guy who hits the go-ahead run to win the baseball game is called a hero. But are they?are those two guysreally heores? Can anyone make (3) ______ suggestions about who decides who is a hero anyway? And what makes a hero?12/11/2014The end of the semester is coming. Students are busy preparing to do (4)______exams. And I will have to do (5)______ assignments for the courses I have taken. However, the weblog is still hot, students' enthusiasm is not fading, and I will ponder on the topic of everday hero continuously1
微信支付 
支付宝支付