试论XLPE绝缘电缆半导屏蔽层抑制树枝生长和热屏障的作用。

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问题:

试论XLPE绝缘电缆半导屏蔽层抑制树枝生长和热屏障的作用。

考点:线路运行与检修专业考试高级电力电缆工高级电力电缆工题库
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已知抛物线y2=4x的焦点F与椭圆
x2
a2
+
y2
b2
=1(a>b>0)
的一个焦点重合,它们在第一象限内的交点为T,且TF与x轴垂直,则椭圆的离心率为(  )
A.
3
-
2
B.
2
-1
C.
1
2
D.
2
2
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为进一步加强计重收费管理工作,对收费人员一个月内连续几次以上出现何种违规行为的收费人员要调离工作岗位?

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浸润型肺结核自然演变过程中,下列情况最常见的是 ()

A.急性血行播散

B.亚急性血行播散

C.干酪性坏死

D.空洞形成

E.引起慢性纤维空洞型肺结核

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第二节完形填空(共20小题;每小题1.5分,满分30分)

Just how popular was Mini? Very. Every year, her classmates voted her  31 the favourite student. She was so easy to 32 along with that the number of friends she had by far outnumbered (压倒)those of anyone else in her group.

One day the 10-year-old was  33  talking in the class and ordered to stay back as  34 . Staying back 35 doing something “useful”, like helping in the garden or library after school.

Now the school in which Mini 36  had a rule of sorts. Once a month, you could interchange your punishment schedule with someone else. If you 37 something else to do the day you were punished, you could 38 a friend to stand in for you. Of course, you had to return the favour, but in that same month itself. Otherwise the favour cancelled itself out. So the students who stayed back for others and wanted the favour repaid, found ways to be punished that very month. 39 it happened, on that day a very dear aunt was visiting Mini on her way back to America. That afternoon was the only  40  Mini had of seeing her for another five years. Mini needed someone to stand in for her. That was a problem though it was the last day of the month. So anyone who helped her, would do so out of friendship's sake alone. She sought out Preeti, her “best'”friend. "Oh no Mini, I can't," Preeti said. "I have to coach my brother for his nursery entrance test. The kid just can't seem to get into any decent (体面的)school." And she spent a good  41 of time telling Mini of her brother's problems.

"Mohit, 42 you stay back for me?" Mini asked another friend who was dribbling a ball(运球) in the playground. She knew he often just hung around after school. "To help the librarian? I  43 you'd told me earlier. I have to go to a relative's house with my father. Some other day perhaps," and  44 that Mohit fled.

By now, Mini was beginning to  45  if even one of her friends would 46  to stay. But she tried again. Three  47 friends and each one refused. Of course, no one said "no" outright. Mini was a great pal, after all. But each had a “reason”why they couldn't take her place that afternoon, and if only it were some other day...

So, after school Mini stayed back to help the  48 , Ms Mathur. And, when the remote Ms Mathur found her crying after everyone had left, it was she  49  surprised Mini by allowing her to leave to meet her aunt. "Some popularity I have," Mini murmured(嘟囔) to herself, as she went home. "I may have many friends, but in reality I have  50 ."

31. A. for             B. as            C. against       D. with

32. A. go             B. take          C. get           D. bring

33. A. kept            B. prevent        C. stopped       D. caught

34. A. punishment       B. award        C. reward        D. guilt

35. A. intended             B. meant        C. suggested     D. showed

36. A. worked         B. lived          C. studied       D. stayed

37. A. needed          B. made        C. required      D. had

38. A. ask            B. order          C. demand       D. advise

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

40. A. chance                 B. choice                  C. change               D. challenge

41. A. plenty                 B. many                  C. deal                 D. number

42. A. will                   B. must                   C. shall                 D. may

43.  A. want            B. hope                  C. expect             D. wish

44.  A. on              B. by                C. with               D. at

45.  A. realize           B. doubt             C. recognize          D. admit

46.  A. allow            B. permit           C. agree              D. approve

47.  A. more            B. another           C. many              D. others

48.  A. aunt             B. teacher            C. friend              D. librarian

49.  A. what             B. that              C. which               D. whom

50.  A. nobody           B. none             C. no one                      D. nothing

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