国家标准是对全国经济技术发展有重大意义，必须在全国范围内统一的（）。 A.管理要求 发布时间：2017-08-04 23:54 │ 来源：www.tikuol.com 题型：单项选择题 问题： 国家标准是对全国经济技术发展有重大意义，必须在全国范围内统一的（）。A.管理要求B.工作要求C.方法要求D.技术要求
题型：单项选择题 完形填空。 In the depth of my memory, many things I did with my father still live. These things have come to represent(代表), in fact, what I call 1 and love. I don't remember my father ever getting into swimming pool. But he 2 the water. Any kind of 3 ride seemed to give him pleasure. 4 he loved to fish; sometimes he took me along. But I never really liked being on the water, the way my father did. I liked being 5 the water, moving through it, 6 it all around me. I was not a strong 7 , or one who learned to swim early, for I had my 8 . But I loved being in the swimming pool close to my father's office and 9 those summer days with my father, who 10 come by on a break. I needed him to see what I could do. My father would stand there in his suit, the 11 person not in swimsuit. After swimming, I would go 12 his office and sit on the wooden chair in front of his big desk, where he let me 13 anything I found in his top desk drawer(抽屉). Sometimes, if I was left alone at his desk 14 he worked in the lab, an assistant or a student might come in and tell me perhaps I shouldn't be playing with his 15 . But my father always 16 and said easily, " Oh, no, it's 17 ." Sometimes he handed me coins and told me to get 18 an ice cream… A poet once said, "We look at life once, in childhood; the rest is 19 ." And I think it is not only what we "look at once, in childhood" that determines our memories, but 20 , in that childhood, looks at us.( ) 1. A. desire ( ) 2. A. avoided ( ) 3. A. boat ( ) 4. A. But ( ) 5. A. on ( ) 6. A. having ( ) 7. A. swimmer ( ) 8. A. hopes ( ) 9. A. spending ( )10. A. should ( )11. A. next ( )12. A. away from ( )13. A. put up ( )14. A. the moment( )15. A. fishing net( )16. A. stood to ( )17. A. fine ( )18. A. the student( )19. A. memory ( )20. A. which B. joy B. refused B. bus B. Then B. off B. leaving B. rider B. faiths B. saving B. would B. only B. out of B. break down B. the first timeB. office thingsB. set out B. strange B. the assistantB. wealth B. who C. anger C. praised C. train C. And C. by C. making C. walker C. rights C. wasting C. had to C. other C. by C. play with C. while C. wooden chairC. showed up C. terrible C. myself C. experience C. what D. worry D. loved D. bike D. Still D. in D. getting D. runner D. fears D. ruining D. ought to D. last D. inside D. work out D. before D. lab equipment D. turned out D. funny D. himself D. practice D. whose 查看答案
题型：单项选择题 下列有关活度系数(γi)的叙述中，正确的是______。A．γi只用于相平衡计算B．在理论上计算γi值还是难于做到的C．在粗略工程计算中，可取γi=1D．在汽液平衡中，γi值随液相组成变化不大 查看答案