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问题 多项选择题

按照《国家电网公司输变电工程提高设计使用寿命指导意见（试行）》的要求，下面针对电气设备具体要求方面表述正确的是（）

A.内置在电气一次设备中的测量、检测传感器元件，应与主体一体化、模块化选型，原则上与主设备使用寿命一致。

B.电气二次设备，包括控制、保护、通信、远动、自动化、直流电源及不停电电源等装置，其主体部件使用寿命达到10年。

C.瓷或玻璃绝缘子、金具使用寿命达到20年。

D.电气二次设备应按照（模块化）、（标准化）原则，增加互换性和通用性。

E.变电站钢结构构架、线路铁塔使用寿命达到60年，钢材等级一般采用Q235、Q345和Q420，有条件时也可采用Q460。

答案

参考答案：A, B, D

单项选择题

Passage twoEducating girls quite possibly yields a higher rate of return than any other investment available in the developing world .women’s education may be unusual territory for economists ,but enhancing women’s contribution to development is actually as much an economic as a social issue .and economics ,with its emphasis on incentives ,provides guideposts that point to an explanation for why so many girls are deprived of an education Parents in low-income countries fail to invest in their daughters because they do not expert them to make an economic contribution to he family :girls grow up only to marry into somebody else’s family and bear children .Girls are thus seen as less valuable than boys and kept at home to do housework while their brothers are sent to school-the prophecy becomes self-fulfilling ,trapping women in a vicious circle of neglect. An educated mother ,on the other hand ,has greater earning abilities outside the home and faces an entirely different set of choices. She is likely to have fewer but healthier children and can insist on the development of all her children ,ensuring that her daughters are given a fair chance .The education of her daughters then makes it much more likely that the next generation of girls ,as well as of boys ,will be education and healthy . The vicious circle is thus transformed into a virtuous circle. Few will dispute that education women has great social benefits.But it has enormous economic advantages as well .Most obviously ,there is the direct effect of education on the wages of female workers.Wages rise by 10 to 20 percent for each additional year of schooling. Such big returns are impressive by the standard of other available investments ,but they are just the beginning .Education women also has a significant impact on health practices,including family planning.

What does the author say about women’s education( )

A．It deserves greater attention than other social issues

B．It is now given top priority in many developing countries

C．It will yield greater returns than other known investments

D．It has aroused the interest of a growing number of economists

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单项选择题

营业期间营业人员不得少于（）人.

A.2

B.3

C.4

D.5
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