当独头平巷发生火灾时,正在运转的局部通风机应当()。A、停止运转 B、保持运转

题型:单项选择题

问题:

当独头平巷发生火灾时,正在运转的局部通风机应当()。

A、停止运转

B、保持运转

考点:煤矿安全生产知识竞赛煤矿机电基本知识煤矿机电基本知识题库
题型:单项选择题

阅读理解。

     Every year thousands of young people in England finish school and then take a year off before they start

work or go to university. Some young people go to other countries and work as volunteers (志愿者).

Volunteers give their time to help people. For example, they work in schools or hospitals, or they do something

helpful for the environment.

     Pauline Jones, 18, lives in Cardiff, Wales. Next year she wants to go to university to study Chinese, but now

she's living in Belize. Pauline says, "I'm working with other people here to save the coral reefs (珊瑚礁) in the

sea near Belize. The reefs here are beautiful, but if the sea water is polluted (污染), the coral dies. I'm helping to

do research on the coral and the fish that live around the reefs. All over the world, coral reefs are dying. We

need to do something about the problem before it's too late."

     "I'm staying with a family here and I help do some housework. I don't get any money, but that's OK. I love

my work here, and I'm learning a lot about the people of Belize-and myself. When I finish my work, I want to

stay here for another three months. I want to travel around Belize and Central America."

1. Some young people from England _____ after they finish school.

A. go to university abroad

B. spend one year abroad as volunteers

C. go to work for money

D. start work in schools or hospitals

2. Pauline Jones, an eighteen-year-old girl, is living in _____ now.

A. England

B. China

C. Belize

D. Cardiff

3. Pauline Jones is _____ with other people.

A. studying.Chinese in a university

B. working to save the coral reefs

C. helping do some housework

D. doing some research in Wales

4. From the passage, we know that the coral reefs _____.

A. are likely to die because of the pollution

B. are not as beautiful as before

C. cannot live without fish in the sea

D. will probably be sold for money

5. Pauline Jones wants to _____ after she finishes her work as a volunteer.

A. stay there for another year

B. go back home to start work

C. learn about the people home

D. travel around Central America

题型:单项选择题

48030×2=48060    [    ]

题型:单项选择题

大多数前轮驱动车辆的前轮稍设有正前束,因为驱动力使前轮有负前束的倾向。

题型:单项选择题

市政公用工程常常处于城镇区域,因而必须在施工组织设计中贯彻()管理。

A.文明施工

B.安全施工

C.绿色施工

D.环境保护

题型:单项选择题

下列关于垂体卒中,错误的是()

A.是垂体瘤压迫Willis动脉引起

B.剧烈头痛是较早出现的症状

C.有脑膜刺激症状

D.一般不出现意识障碍

E.是垂体瘤内出血引起

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