搜题请搜索小程序“爱下问搜题”
问题 多项选择题

停电检修的线路与另一回220kV带电线路交叉或接近，工作人员和工器具与另一回线路的距离为下列什么距离时，该线路也应停电？（ ）

A．3.5m

B．3.6m

C．3.8m

D．4.0m

E．4.5m

答案

参考答案：A,B,C

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.

The author believes that a vicious circle can turn into a virtuous circle when ()

A．women care more about education

B．girls can gain equal access to education

C．a family has fewer but healthier children

D． parents can afford their daughters’education
查看答案
单项选择题

采购件镀镍螺丝库存不足，需要向三星公司采购，三星公司为了考虑运输及制造成本因素，限定买家每次必须至少购买100颗镀镍螺丝，低于则不卖，而且该镀镍螺丝是成包成包来卖的，50颗为1包，假设现在需购买镀镍螺丝170颗，则需向三星购买多少颗镀镍螺丝？（）

A.170

B.200

C.150

D.250
查看答案