带电断接引线为什么不能同时接触未接通或已断开的导线两个断头?

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问题:

带电断接引线为什么不能同时接触未接通或已断开的导线两个断头?

考点:国家电网线路安规考试国家电网线路安规考试题库
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小明父亲的血压为21/13kPa,可判断小明父亲是高血压。 [ ]

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阅读理解。

     No one wants to be tested. We would all like to get a driver's license without answering questions

about rights of way or showing that we can parallel park a car. Many future lawyers and doctors

probably wish they could join their profession without taking an exam.

     But tests and standards are a necessary fact of life. They protect us from unskilled drivers, harmful

products and dishonest professionals. In schools too exams play a constructive role. They tell public

officials whether new school programs are making a difference and where new investments are likely to

pay off. They tell teachers what their students have learned--and have not. They tell parents how their

children are doing compared with others of their age. They encourage students to make more effort.

     It is important to recall that for most of century, educators used intelligence tests to decide which

children should get a high-quality education. The point of IQ testing was to find out how much children

were capable of learning rather than to test what they had actually learned. Based on IQ scores, millions

of children were assigned to dumbed-down (学术挑战较小的) programs instead of solid courses in

science, math, history, literature and foreign language.

     This history reminds us that tests should be used to improve education. Every child should have access

to a high - quality education. Students should have full opportunity to learn what will be tested; otherwise

their scores will merely reflect whether they come from an educated family.

     In the past few years, we have seen the enormous benefits that flow to disadvantaged students

because of the information provided by state tests. Those who fall behind are now getting extra instruction

in after - school classes and summer programs. In their efforts to improve student performance, states are

increasing teachers' salaries, testing new teachers and insisting on better teacher education.

     Performance in education means the mastery of both knowledge and skills. This is why it is reasonable

to test teachers to make sure they know their subject matter, as well as how to teach it to young children. And this is why it is reasonable to assess whether students are ready to advance to the next grade or

graduate from high school.

1. According to the passage, school exams enable ______.

A. governments to make right policies

B. students to meet their teachers' requirements

C. teachers to understand if their students have made efforts

D.parents to compare their kids' achievements across schools

2.Which of the following does the author probably agree with?

A. Disadvantaged students can benefit from state tests.

B. Tests should focus on what students have actually learned.

C. Intelligent tests decide if children should get a high - quality education.

D. Intelligent tests are helpful in separating excellent students from poor ones.

3. What is the purpose of the passage?

A. To re - assess the value of IQ testing.

B. To defend the role of testing in education.

C. To explain what high - quality education means.

D. To call for thorough and complete reform in education.

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百福卡的类别号为2位数字,其中00为()

A、个人记名卡

B、单位卡

C、金卡

D、个人普通卡

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定向发行债券合格投资者需要具备的条件之一,要求注册资本在()万元以上或者经审计的净资产在2000万元以上。

A.2000

B.1000

C.3000

D.4000

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工作区子系统由()组成。

A.水平配线系统的信息插座

B.程控交换机

C.工作区用的信息插座

D.楼层分配线设备至信息插座的水平电缆

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