低压电气工作时，拆开的引线、断开的线头应采取（）等遮蔽措施。 A.胶带包裹 B.绝缘

53岁妇女，绝经4年， * * 流液2个月。查：宫颈前唇菜花样赘生物，子宫小，双侧主韧带增厚浸润，但未达盆壁，宫颈活检报告为鳞状细胞癌。本例正确的治疗方法应是（）

A.放射治疗

B.放射治疗后行广泛性子宫切除

C.广泛性子宫切除

D.广泛性子宫切除术及盆腔淋巴结清扫术

E.广泛性子宫切除术后放射治疗

按逻辑功能分，SIP系统由4种元素组成，下列元素中不是SIP系统组成元素的是( )。

A．用户代理

B．代理服务器

C．重定向服务器

D．用户

接诊突发公共卫生事件致病人员，医疗卫生机构内应当采取卫生防护措施，防止交叉感染和污染。（）

阅读理解

     Earlier this month, the Obama Administration called for increasing protection of the world's most

southern continent, Antarctica. Scientists say climate change and human activities have increasingly led

to the melting of massive pieces of Antarctic ice. The disappearance of ice will not only affect wildlife

in the area such as seals and penguins. The melting will also cause oceans and seas around the world

to rise.

     This represents a major threat, especially to coastal areas. For example, the ancient city of Venice,

Italy has long been threatened by rising sea levels. The situation is made worse by the fact that its

ancient buildings, built on a body of water called a lagoon(淡水湖), are slowly sinking. When the city

was founded about 1,600 years ago, the level of the Adriatic Sea was almost two meters lower than it

is today.  

     Rising sea levels are not the only threat. The salty water is also destroying Venice's famous buildings

and artworks. The Italian government is trying to fix the problem with the construction of a

seven-billion-dollar system of moving flood barriers.  

     Climate change is also leading to the melting of ice in other areas, such as Mount Kilimanjaro in

northeastern Tanzania. It is the highest point in Africa, measuring almost 6,000 meters. The mountain

supports five vegetation zones and many kinds of animals.

     The ice glaciers on the mountain are disappearing very quickly. This will have a bad effect on the

mountain's ecosystems and on Tanzania's travel industry. Also, a valuable record of thousands of years

of weather history will also be lost if the ice melts. Scientists study pieces of glaciers to understand

weather patterns from thousands of years ago.  

     In the United States, the icy masses in Glacier National Park in Montana may soon completely

disappear because of climate change. In 1850, it is estimated that there were 150 glaciers in the more

than 400,000 hectare park.  

     There are 26 glaciers remaining today. Scientists estimate that the glaciers will be gone by 2030.

Warming temperatures are also threatening the many kinds of plants and animals that live in this mountain

ecosystem.

1. The writer developed the passage mainly by ______.

A. giving examples              

B. listing reasons    

C. making comparisons          

D. using quotations

2. How many glaciers have disappeared since 1850 in Glacier National Park?

A. 150.          

B. 26.      

C. 400,000.      

D. About 124.

3. According to the passage, what has been affected in Italy by rising sea levels?

A. Many kinds of plants and animals died out in Italy.

B. Venice's famous buildings and artworks are being destroyed completely.

C. The ice glaciers on the mountain are disappearing very quickly.

D. Its ancient buildings could be drowned.

4. What could be the best title for the passage?

A. Climate Change        

B. The Melting of Massive Pieces of Antarctic Ice

C. Visiting Endangered Places around the World

D. The disappearing of the Ice Glaciers

下列哪些属于有害环境（）。

A、可燃气体浓度超过爆炸下限的10%

B、爆炸性粉尘浓度达到或超过爆炸下限的30%

C、氧含量为21%

D、氧含量低于19.5％或超过23.5％