气体间隙设置屏障后,可以显著提高不均匀电场的击穿电压,这是由于屏障积累了空间电荷,改

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问题:

气体间隙设置屏障后,可以显著提高不均匀电场的击穿电压,这是由于屏障积累了空间电荷,改善了(),妨碍了()发展的缘故。

考点:风电场安全风电场安全题库
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There is a bar (酒吧) in our town with the name "The White Horse". It is Mr Webster’s.        people went to the bar last year. But things are quite different now.
There was a picture of a white horse on the door of the bar. Then a stranger came in one day, drank something,          around the bar, and then said to Mr. Webster, “Few people come here. Take down the picture of the white horse and put a picture of a black horse         .” 
“But the name of the bar is The White Horse,” Mr. Webster said. “Yes, but do it.” the man said. Then he went out of the bar. Mr. Webster went to        and said, “I want a picture of a black horse.”
      later a picture of a black horse was on the door of the bar instead of the white horse. Soon after the door        , a man came in and said, “There’s a         on the door of your bar. It is surprising that the picture is different from the name.” The man looked, sat down and           something. Then another man came in and said      , and then another and another. A lot of people came in and said, “The picture on your door is         ,” and they all stopped and drank in Mr. Webster’s bar.
小题1:
A.FewB.So manyC.SomeD.A lot of
小题2:
A.walkedB.turnedC.lookedD.moved
小题3:
A.tooB.as wellC.insteadD.either
小题4:
A.an artistB.a musicianC.an athleteD.a teacher
小题5:
A.MinutesB.DaysC.YearsD.Centuries
小题6:
A.closedB.brokeC.changedD.opened
小题7:
A.pictureB.pointC.mistakeD.thought
小题8:
A.drankB.eatC.sawD.bought
小题9:
A.different ideasB.the sameC.nothingD.everything
小题10:
A.suitableB.a beautyC.wrongD.an ad
题型:填空题

上肢内旋位,上臂及前臂外侧麻木()

A.臂丛完全损伤

B.臂丛上部损伤

C.臂丛下部损伤

D.正中神经损伤

E.颈髓损伤

题型:填空题

—Where is my bag? I can’t find it.

—Don’t worry. It must be         in your room.

A.somewhere

B.anywhere

C.everywhere

D.some where

题型:填空题

历史上,曾以北京作为京城的朝代是[ ]

A.金、元、明、清

B.隋、唐、元、明

C.宋、元、明、清

D.周、汉、元、清

题型:填空题

浸润型肺结核早期病变性质为()

A.出血性炎

B.浆液性炎

C.化脓性炎症

D.慢性肉芽肿性炎

E.假膜性炎

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