现场试验应遵循的三项原则是（） A.目的、随机、又寸照 B.目的、随机、盲法 发布时间：2017-09-12 13:04 │ 来源：www.tikuol.com 题型：单项选择题 问题： 现场试验应遵循的三项原则是（）A.目的、随机、又寸照 B.目的、随机、盲法 C.目的、随机、时间 D.随机、对照、时间 E.随机、对照、盲法
题型：单项选择题 完形填空 Night after night, as was often the case, she'd lean down and push my long hair out of the __1__, then kiss my forehead. I don't remember when it first started __2__ me.But it did.Finally one night, I shouted out at her, " Don't do that any more-your hands are too __3__!" She didn't say anything in reply.But never again did my mother __4__ my day with that familiar __5__ of her love. With the years passing, my thoughts __6__ to that night, when I missed my mother's hands, missed her goodnight __7__ on my forehead.Sometimes the incident seemed very __8__, while sometimes far away.But always it was hidden in the back of my __9__.Now Mom is in her seventies, and those hands that I __10__ thought to be so rough are still doing things for me and my __11__.And now my own children are grown and gone.One thanksgiving Eve, __12__ I slept in the bedroom of my youth, a __13__ hand hesitantly run across my face to __14__ the hair from my forehead.Then a kiss, ever so __15__, touched my brow. In my memory, for the thousandth time, I recalled the night and my young voice __16__."Don't do that any more-your hands are too rough!" __17__, I caught Mom's hand in hand, saying how __18__ I was for that night.I thought she'd remember, as I did.But Mom didn't know __19__ I was talking about.She had forgotten, and forgiven long ago. That night, I fell asleep with a new __20__ for my gentle mother and her caring hands.And the guilt that I had carried around for so long was nowhere to be found.( )1. A.place ( )2. A.pleasing ( )3. A.sweet ( )4. A.take up ( )5. A.expression ( )6. A.remained ( )7. A.story ( )8. A.close ( )9. A.brain ( )10. A.once ( )11. A.husband ( )12. A.as ( )13. A.rough ( )14. A.tidy ( )15. A.gently ( )16. A.wept ( )17. A.On time ( )18. A.grateful ( )19. A.where ( )20. A.memory B. way B. frightening B. tough B. give up B. symbol B. returned B. greeting B. serious B. mind B. even B. children B. before B. reliable B. touch B. friendly B. whispered B. All at once B. anxious B. why B. sense C. order C. satisfying C. ugly C. end up C. promise C. occurred C. kiss C. different C. spirit C. still C. family C. although C. thin C. brush C. closely C. complained C. Once again C. sorry C. what C. pleasure D. shape D. annoying D. rough D. break up D. experience D. missed D. song D. unusual D. heart D. always D. father D. since D. familiar D. wiped D. weakly D. struggled D. As usual D. excited D. whom D. appreciation 查看答案
题型：单项选择题 如下所示的简单互联网中，路由器Q的路由表中对应的网络40.0.0.0的下一跳步IP地址应该为 【20】 。 网络(10.0.0.0)经路由器(Q，10.0.0.4)与网(20.0.0.0)相连 网络(20.0.0.0)经路由器(R,20.0.0.5)与网(30.0.0.0)相连 网络(30.0.0.0)经路由器(S，30.0.0.6)与网(40.0.0.0)相连 查看答案