光缆缆芯结构一般分为层绞式、骨架式、束管式和带状式四种。最常用的是（）。A、层绞式 发布时间：2017-10-29 03:46 │ 来源：www.tikuol.com 题型：单项选择题 问题： 光缆缆芯结构一般分为层绞式、骨架式、束管式和带状式四种。最常用的是（）。A、层绞式B、骨架式C、束管式D、带状式
题型：单项选择题 完形填空 When I moved into an empty dorm (宿舍) for the first time two years ago, I was certain of a few things. Firstly, I realized that I didn't 1 anybody at the school. Secondly, I knew that l wanted to work hard at my lessons and 2 something useful. And thirdly, I wanted to have a good time with new classmates, without my parents around. The first 3 frightened me in the beginning. But that 4 quickly disappeared. It was the other two goals 5 ended up being my difficulties. I knew that it was 6 to devote enough time to class and to social efforts. But I wanted to 7 in both. I knew this would be a 8 , but I didn't realize how much until classes began. I got on well with the other girls who lived in my dorm. 9 , instead of finishing my homework 10 it was due, I went upstairs and had ice cream with my neighbor. I always finished it the next day between classes. I knew 11 wasn't very good and the grade I 12 showed my lack of effort. I was 13 that I needed to find some sort of balance. So I created a schedule (时间表) that would 14 my time up between going to class, doing homework, and relaxing. It seemed like a good idea, 15 I was only able to 16 it for a few days. A schedule like that was too much pressure. So I tried another 17 . Each week I made a list of everything I had to get done during that week. Then, under the list of things I had to get done, I 18 a list of things I could do if I had time. This is the method I have used since then. I'm glad that I've learned to 19 things and it has 20 prepare me for what is to come after graduation.( )1. A. know ( )2. A. understand ( )3. A. teacher ( )4. A. happiness ( )5. A. which ( )6. A. hard ( )7. A. win ( )8. A. chance ( )9. A. Often ( )10. A. because ( )11. A. it ( )12. A. demanded ( )13. A. asleep ( )14. A. fix ( )15. A. so ( )16. A. use ( )17. A. plan ( )18. A. made ( )19. A. do ( )20. A. had B. recognize B. learn B. day B. excitement B. what B. easy B. succeed B. job B. Seldom B. when B. one B. took B. awake B. divide B. and B. keep B. energy B. found B. control B. helped C. realize C. try C. class C. fear C. that C. interestingC. get C. challenge C. Unluckily C. after C. these C. accepted C. ashamed C. put C. but C. follow C. pressure C. picked C. balance C. let D. like D. tell D. realization D. desire D. who D. nice D. wish D. time D. Fortunately D. before D. I D. received D. aware D. build D. however D. observe D. effort D. brought D. hold D. forced 查看答案
题型：单项选择题 BI002GB/T12459—2005《钢制对焊无缝管件》标准规定，公称直径在80~90mm之间的所有管件，坡口外径允许偏差（）。A.±1.5mmB.±1.2mmC.±1.0mmD.±1.6mm 查看答案