信息完整性可以依靠报文鉴别机制，例如哈希算法等来保障，信息机密性可以依靠加密机制以及 发布时间：2018-11-11 20:23 │ 来源：www.tikuol.com 题型：判断题 问题： 信息完整性可以依靠报文鉴别机制，例如哈希算法等来保障，信息机密性可以依靠加密机制以及密钥分发等来保障。
题型：判断题 完形填空。 "A friend walks in when the rest of the world walks out." Sometimes in life, you find a special friend. Someone who changes your 1 just by being part of it; Someone who makes you laugh until you can't 2 ; Someone who makes you believe that there really is 3 in the world; Someone who convince (使相信) you that there really is an 4 door just waiting for you to open it. This is Forever Friendship. When you're 5 , and the world seems dark and empty, your forever friend 6 you up in spirits and makes that dark and empty world suddenly seem bright and 7 . Your forever friend gets you 8 the hard times and the sad times. If you turn and walk away, your foreverfriend 9 . If you lose your way, your forever friend guides you, encourages you, holds your 10 and tells you that everything is going to be OK. And if you 11 such a friend, you feel happy, because you 12 not worry. You have a forever friend forlife, and forever has no 13 . A true friend is someone who gives you a hand and touches your heart. Remember: 14 happens, happens for a reason. How many people have eight true friends in fact? Hardly 15 I know. But some of us have all right friendsand good friends. ( ) 1. A. food ( ) 2. A. think ( ) 3. A. good ( ) 4. A. unpacked ( ) 5. A. high ( ) 6. A. lifts ( ) 7. A. natural ( ) 8. A. around ( ) 9. A. leaves ( ) 10. A. head ( ) 11. A. make ( ) 12. A. need ( ) 13. A. job ( ) 14. A. however ( ) 15. A. someone B. time B. stop B. health B. unlocked B. above B. opens B. full B. below B. travels B. hand B. treat B. must B. end B. whoever B. everyone C. life C. want C. man C. unfixed C. across C. catches C. funny C. through C. moves C. heart C. find C. may C. top C. whatever C. none D. work D. remember D. sight D. unimportant D. down D. stands D. proud D. beside D. follows D. back D. want D. have D. goal D. wherever D. anyone 查看答案