成都地铁1号线一期全线设有（）座牵引降压混合变电所。A、5 B、6 C、7 D

尿蛋白表现为溢出性蛋白尿的是（）

A.肾小球肾炎

B.肾盂肾炎

C.肾病综合征

D.多发性骨髓瘤

E.系统性红斑狼疮

阅读理解。

      Coal mine accidents are frequently headline makers in China, offering a plentiful supply of long lists of

the dead. Before this, five major coal mine accidents since January have already claimed lives of 287 coal

miners.

      Once an accident happens, the safety measures are scrutinized, officials and owners responsible are

punished or warned or fined. But the accidents keep happening time and again. The background of this

endless disaster is a country thirsty for energy to satisfy the appetite of its economic engine.

      With the rich reserve (储存) of coal and relatively limited petroleum (石油) reserve, the former makes

up 67.12 percent of energy consumption. By contrast, petroleum and natural gas take about 60 percent

of the energy consumption in other countries.

      Such a situation is unlikely to change within a foreseeable future because the country still counts heavily

on coal for more and more energy. If no measures with great effects are taken to improve the safety in the

mines, the accidents will remain a long-term headache for China.

      Digging coal underground is, by its nature, a dangerous job. No equipment can guarantee 100 percent

safety for the miners working underground because numerous uncertainties exist.

      Most of China's coal mines are far from being mechanized. The average output of coal for each Chinese

coal miner every day is 1 ton, while the number in the US coal mines, where the production is highly

mechanized, is 40 tons.

      Mechanized production in coal mines can cut down the number of miners who have to work on the

dangerous coal face. It can also enhance the capability of the mines to detect potential danger. In this way

mine accidents will be decreased.

     Admittedly, the mechanized production demands financial support.

     But what is the price of a life, or a dozen, a score-a hundred? Compare these awful figures with the

misery they bring, heavy investment is worthy.

1. The writer's attitude towards dealing with coal mine accidents is ______. [ ]

A. critical

B. positive

C. unclear

D. doubtful

2. The underlined word"scrutinized" most probably means ______. [ ]

A. made

B. examined

C. criticized

D. discussed

3. According to the writer, the best way to stop coal mine accidents is to ______. [ ]

A. perfect safety measures

B. use more natural gas

C. cut down the number of miners

D. improve mechanized production

4. The writer implies in the article that ______. [ ]

A. by improving mechanized production, we can stop coal mine accidents

B. it's improper to depend too much on coal for energy consumption

C. officials and coal mine owners didn't take safety measures seriously

D. losing lives costs much more than improving mechanized production

根据合同法原理，当违约责任与侵权责任竞合时，当事人( )

A．应只主张侵权责任
B．应只主张违约责任
C．可以同时主张违约责任和侵权责任
D．可以选择主张违约责任或侵权责任

元春的封号是什么？

连接在低温水系统上的油水热交换器有（）。

A.燃油热交换器

B.机油热交换器

C.静液压油热交换器

D.低温水散热器