问题
单项选择题
以下网络安全技术中，不能用于防止发送或接收信息的用户出现“抵赖”的是（ ）。
A．数字签名
B．防火墙
C．第三方确认
D．身份认证
答案
参考答案：B
解析：针对电子商务一类的应用，网络安全技术研究需要通过数字签名、身份认证和第三方确认等方法，确保网络信息传输的合法性问题，防止出现“抵赖”等现象产生。
搜题请搜索小程序“爱下问搜题”
以下网络安全技术中，不能用于防止发送或接收信息的用户出现“抵赖”的是（ ）。
A．数字签名
B．防火墙
C．第三方确认
D．身份认证
参考答案：B
解析：针对电子商务一类的应用，网络安全技术研究需要通过数字签名、身份认证和第三方确认等方法，确保网络信息传输的合法性问题，防止出现“抵赖”等现象产生。
| 阅读理解 | ||||
| ||||
| 1. The above message is probably taken from________. | ||||
| A. a magazine B. a Web page C. a newspaper D. a leaflet | ||||
| 2. If you intend to write an essay about education in different countries, you can refer to________. | ||||
A. Recreation Programming & Berli n at WarB. Race to the Pole & The "Times" Good University Guide C. Race to the Pole & Berlin at War D. Recreation Programming & The "Times" Good University Guide | ||||
| 3. If you buy all the three books available, it will save you________. | ||||
| A. ￡4.46 B. ￡12.59 C. ￡14.49 D. ￡8.64 |
Recreation Programming J. Robert Rossman; Barbara Elwood Schlatter Paperback Used in numerous universities throughout the United States, Canada, Australia & New Zealand, Recreation Programming provides programming insights for educators, practitioners, and students.This book will present readers with the vital tools necessary in providing successful programs for their customers... 
Availability: 5～7 Days Our price: ￡52.65 RRP: ￡58.50(Save: ￡5.85)
If you're a 17yearold, or his or her parents, desperately trying to find objective information, try The "Times" Good University Guide based on The Times' league tables published annually since 1992.This is especially useful now that there are no official government league tables to enable you to compare higher education institutions... Availability: 5～7 Days￡12.75($16.99)-----
