输电线路为什么要防雷?避雷线在防雷保护中起何作用?

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问题:

输电线路为什么要防雷?避雷线在防雷保护中起何作用?

考点:线路运行与检修专业考试送电线路中级工送电线路中级工题库
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第二部分阅读理解阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。(共20小题。每小题2分,共40分)

Bill Clinton was born on August 19, 1946 in a town called Hope, with the birth name William Jefferson Blythe. His birth father died in a car accident just three months before his birth. When he was born, his mother sent him to live with his grandparents because she couldn't possibly support a child by herself. He lived with his grandparents for two years while his mother was away at a nursing school in New Orleans, trying to advance her career. When Bill was four, his mother returned to Hope, where she met and married Roger Clinton Sr. A few years later, Bill and his family moved to Hot Springs, where Bill attended school. When he was nine years old, he changed schools and went to Ramble Elementary. When Bill was ten, Roger Clinton Jr. was born, and at age fifteen, Bill took his stepfather' s last name in hopes of helping his mother's troubled relationship.

While Bill was growing up in Hot Springs, the town was troubled by gambling (赌博), but Bill had little contact with this part of society despite his parents' frequent participation (参与) in these illegal practices. As time went by, his mother' s relationship with Roger Clinton Sr. became more and more unstable.  His parents often separated.  In high school, Bill was a member of the band, student government, honor society and many other organizations. One summer at a political summer camp called Boys State, Bill ran for delegate (代表) to Boys Nation. He won this election and was on his way to Washington to meet John F. Kennedy, the president. Bill said of his victory, "I didn't know if I could win a race like that... ". After that, Bill became determined to enter politics.

56 . William Jefferson Blythe moved to Hot Springs ________

A. when he was born                   B. before he was nine years old

C. when his mother remarried            D. when he was two

57. Bill Clinton once stayed in the following places EXCEPT ________

A. the town of Hope               B. the nursing school in New Orleans

C. Hot Springs                   D. Ramble Elementary

58. Which of the following statements is NOT true?

A. Roger Clinton Sr. was always kind to Bill and his mother.

B. Bill Clinton was once called William Jefferson Blythe before 15.

C. Bill' s mother and stepfather were interested in gambling.

D. Roger Clinton Jr. was Bill Clinton' s half brother.

59. It can be learned from the passage that _______

A. Bill wanted to be a president while studying at school

B. Boys Nation was a political summer camp

C. members of Boys State could see the president

D. Bill decided to enter politics after meeting John F. Kennedy

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具有内酰胺结构的是()

A.黄连碱

B.樟柳碱

C.乌头碱

D.东莨菪碱

E.氧化苦参碱

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生产豆浆机的九阳公司开始进入电饭锅、压力锅等家庭用小家电市场,可以认为这是一种()战略。

A.不相关多元化

B.相关多元化

C.垂直一体化

D.单一业务

题型:问答题 论述题

尚无工程设施保护的洪水泛滥所及的地区称( )。

A.防洪保护区

B.防洪区

C.蓄滞洪区

D.洪泛区

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发卡银行对准贷记卡及借记卡(不含储值卡)账户内存款的计息方法是什么?

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