()压裂液实际上就是一种液包气乳化液,或者说泡沫是气体分散于液体中的分散体系。A.泡

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问题:

()压裂液实际上就是一种液包气乳化液,或者说泡沫是气体分散于液体中的分散体系。

A.泡沫

B.水基

C.油基

D.醇基

考点:压裂操作工中级压裂操作工中级压裂操作工题库
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能显示大唐前期的博大胸襟的陵墓是()?

A、永陵

B、长陵

C、乾陵

D、端陵

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强夯法中铺设垫层的作用为:

A.支承设备

B.扩散夯击能

C.排水固结

D.加大地下水位与地表面的距离

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第四节完型填空:(共20小题,每小题1.5分,共30分)

Recent studies show that only one out of three people have strong and healthy self-confidence . That ____26 two out of every three people simply don’t know the ____27 they already have to be successful when it’s _____28 there in their hands!___29 if you want others to believe in yourself first. Rememer: “ No one can ask you feel inferior unless you _____30them.” A successful businessman says, “you can’t push anyone up a ladder____31 he knows he can climb himself.”

Many of us have an image____32 , the  image we have of ourselves. ___33one guy put it: “You can’t win horse race if you think you look_____34 on a horse.” To succeed, the first person you have to ____35 is yourself! So stop believing your own lies about yourself. Just ____36 your mind and you will change your life.

One of the most harmful weapons that can kill you success in life are the two little words: “____37”You know that people used to ____38 that if human being s traveled faster than 30 miles an hour it would ____39 our circulation of blood and kill us?Thank  goodness a few people didn’t believe that ___40 thinking, or we wouldn’t be riding in cars , buses, and flying in airplanes today. You’ll never know until you____41.

Roger Bannister was the first human being to run a mile in less than 4 minutes. But _____42 he did it, most people in the would didn’t think it was even _____43. Yet only weeks after Bannister did it , suddenly _____44 all over the world began running a mile in less  than 4 minutes! If we believe something can be done, we’ll _____45 do it.

26 .A. means     B. reflects   C. reads      D. explains

27. A. chance     B. strength  C. ability     D. reason 

28. A. immediately B.properly   C. accurately D. right

29. A. Because   B. But      C. What     D. While

30. A.let        B. challenge  C. admit    D. make

31. A. if        B. except     C. until     D. unless

32. A.quiz      B.question    C. problem D. mystery

33. A. When    B. As        C. While   D. Since

34. A. curious   B. good –looking C.serious  D.funny

35. A. beat      B. knock      C. strike    D. defend

36. A. settle     B. bend       C. change   D. fix

37. A. I failed.   B. Not me.     C. Can I?  D. I can’t

38. A. imagine   B. think       C. suspect   D. doubt

39. A. start      B. help        C. stop     D. quit

40. A. silly      B. empty      C. reasonable D.terrible

41. A. judge     B. realize      C. understand D.try

42. A. after      B. before      C. since    D. because

43. A. likely     B.unbelievable  C. possible D. impossible

44. A.workers    B. runners     C. competitors D.players

45. A. simply    B. seldom     C. always  D. usually                

题型:单项选择题

局部热水供应系统

题型:单项选择题

当换热的两种流体放热系数相差较大时,常采用()换热器。

A.壳管式

B.肋片管式

C.套管式

D.都不适合

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