电焊弧光对人体主要有包括哪些危害？

数据结构中，与所使用的计算机无关的是数据的 ( )

A．存储结构

B．物理结构

C．逻辑结构

D．物理和存储结构

下列关于资本监管的说法，不正确的是( )。

A．少数股权指在合并报表时，母银行净经营成果和净资产中，不以任何直接或间接方式归属于子银行的部分

B．未分配利润指商业银行以前年度实现的未分配利润或未弥补亏损

C．优先股是商业银行发行的、给予投资者在收益分配、剩余资产分配等方面优先权利的股票

D．计入附属资本的可转换债券，不可由持有者主动回售，未经银监会同意发行人不准赎回

2007年8月7日，贵州省黔西县羊场乡垅华煤矿发生一起重大水害事故，溃水量7000m³，造成12人死亡，2人受伤。矿井正在进行改扩建，垅华煤矿地质及开采资料不全，也未配备水文专业技术人员。设置的密闭水闸墙没有留泄水孔。由于矿区连降雨，大量水不断通过地表裂缝渗透、充满老窑采空区，致使行人斜井210米处西帮老窑密闭墙内的积水溃决。

1、依据《煤矿防治水规程》，确定这起突水事故的等级？

2、谈谈这起事故对你有何启示。

阅读理解。

     Three key facts about rising sea levels need to be pointed out to the world's politicians and planners:

sea-level rise is now unavoidable (不可避免的), it will happen faster than most of us thought, and it will

go on for a very long time.

     Even if greenhouse gas emissions (排放) stopped tomorrow, the oceans would continue to become

larger as they get warm. The climate scientists estimate that sea-level rise may be in the range of 1 to 2

meters by 2100, with a small risk of an even greater rise.

     For many islands and low-lying regions, even small rises will cause disasters. But for most countries,

the problem is what has been built on that land: New York, Sydney and Tokyo, to mention just a few

cities. Unless something can be done, great areas of urban network will disappear under the waves. It

will take a great engineering effort to protect these cities-an effort that may be beyond economies that

have been brought to their knees.

     None of this means we should fear, and stop trying to forbid emissions. But together with these efforts,

we need to start acting now and we must stop building in danger zones.

     Billions of dollars are being spent on constructing homes, offices and roads in vulnerable (脆弱的)

coastal areas. For instance, the skyscrapers of Shanghai are being built on land that is mere 4 meters

above sea level on average, and they are sinking under the weight of the buildings. Therefore, planning

for new coastal developments is to go against reality. If we want to build a lasting heritage for our children,

we should do so on the plentiful land that is in no danger from the sea. It is one of the effective ways to

slow down climate change, and we should be acting on it now.

1. The most possible reason for the rising of sea levels should be _____.

A. greenhouse gas emission

B. temperature change of the oceans

C. vulnerable coastal area

D. fast urban development and expansion

2. New York, Sydney, and Tokyo are mentioned in this passage to show _____.

A. climate change has been completely out of control

B. modem cities are usually built along the coastline

C. the coastline is very important for modem countries

D. climate change can do harm to economies

3. The effort to protect coastal cities may be beyond economies because _____.

A. much money has been wasted to build coastal cities

B. people have lost confidence in their economies

C. economy development has made climate change worse

D. protecting the cities may cost more than what has been obtained

4. According to the author, we should _____ to deal with sea-level rise.

A. move big cities like New York and Shanghai to higher places

B. stop building skyscrapers in big cities like Sydney and Tokyo

C. build cities on the land free from the danger of sea-level rise

D. be aware of the danger of greenhouse gas emissions into the ocean

常引起胃粘膜损害的药物有：（）

A.甲氰咪胍

B.利血平

C.肾上腺皮质激素

D.非甾体类消炎药

E.抗癌药物