ChaseDream

标题: prep08的一道题求分析 [打印本页]

作者: nicolezzy 时间: 2015-10-11 17:31
标题: prep08的一道题求分析

82. (33511-!-item-!-188;#058&007598)

Technological improvements and reduced equipment costs have made converting solar energy directly into electricity far more cost-efficient in the last decade. However, the threshold of economic viability for solar power (that is, the price per barrel to which oil would have to rise in order for new solar power plants to be more economical than new oil-fired power plants) is unchanged at thirty-five dollars.

Which of the following, if true, does most to help explain why the increased cost-efficiency of solar power has not decreased its threshold of economic viability?

A. The cost of oil has fallen dramatically.

B. The reduction in the cost of solar-power equipment has occurred despite increased raw material costs for that equipment.

C. Technological changes have increased the efficiency of oil-fired power plants.

D. Most electricity is generated by coal-fired or nuclear, rather than oil-fired, power plants.

E. When the price of oil increases, reserves of oil not previously worth exploiting become economically viable.

看不太的原因大概是红字不知道怎么翻译，求大神们帮忙啦谢谢鞠躬鞠躬

作者: nicolezzy 时间: 2015-10-11 17:43
抱歉红字部分没有标明就是括号里的那个句子

作者: nicolezzy 时间: 2015-10-11 21:05
不要沉啊

作者: 爱芒果 时间: 2016-4-21 12:34
我看到一个老师的解释，觉得很清楚~希望对你也有帮助~http://blog.sina.com.cn/s/blog_7ce2067c01013jll.html

欢迎光临 ChaseDream (https://forum.chasedream.com/)