存在不存在电阻为零的物质?

题型:问答题

问题:

存在不存在电阻为零的物质?

考点:导体,绝缘体
题型:问答题

会计师事务所应当委派具有必要素质、专业胜任能力和时间的员工,按照法律法规、职业道德和业务准则的规定执行业务,以使会计师事务所和项目合伙人能够根据具体情况出具恰当的报告。因此会计师事务所在委派项目组成员时应考虑的事项有()。

A、需要考虑独立性和客观性的情形

B、拟执行工作的时间

C、需要具备的经验、专业知识和技能

D、业务类型、规模、重要程度、复杂性和风险

题型:问答题

Dolores Huerta has worked hard most of her life to help other people. She has helped change things so that farm workers can have a better life.

Dolores grew up in California. She was a good student and liked school. After she finished high school, she went to college and studied to be a teacher. After she became a teacher, Dolores noticed that many of her students were not getting enough food to eat. Some of them wore very old clothes. Dolores wondered how she could help them.

Dolores decided to stop teaching so that she could spend more time helping the farm workers and their families. One thing she wanted to do was to get more pay for farm workers so they could buy their children the things they needed.

Dolores knew that many farm workers moved often from one place to another to help pick different kinds of fruits and vegetables. She began talking and writing about these workers. Even people who lived far from California read what Dolores wrote.

Getting higher pay for the farm workers was not easy. Dolores worked hard to make sure that farm workers got good pay for their work. She knew that nothing would change unless people made new laws to help the workers. Through all her hard work, new laws were made that gave farm workers good pay.

Dolores Huerta has worked for more than 30 years in many different ways to make life better for working people. She has shown how much one person can change things.

小题1:Dolores became a ____ after she left college.

A.farmer

B.teacher

C.worker

D.lawyer小题2:Dolores gave up her first job because ____.

A.she found it was too boring for her

B.the work condition was too bad

C.she wanted to do more for others

D.she got little pay for her work小题3: How did Dolores help farm workers?

A.She gave them food and clothes.

B.She helped them teach their children.

C.She helped them got more pay.

D.She made new laws for them.

题型:问答题

图示为110kV配电装置变压器间隔断面图(局部),已知110kV系统为中性点有效接地系统,变压器为油浸式,请回答下列问题:

若变电所有一只高40m的独立避雷针,欲对高25m的建筑物进行直击雷保护,其保护半径应为()。

A.8.7m

B.13m

C.16m

D.21m

题型:问答题

大多数人能听到的声音的频率范围是(  )

A.85-1100Hz

B.20-20000Hz

C.10-4000Hz

D.15-50000Hz

题型:问答题

表示环境行政许可的文件叫做许可证书,包括行政机关批准、核发的各种形式的文书和证件,具体包括()。

A、许可证、执照

B、批准证书

C、资格证书

D、注册证书、批复

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