从社会效益和经济效益出发,某地制定了三年规划,投入资金进行生态环境建设,并以此发展旅游产业.根据规划,第一年度投入资金800万元,第二年度比第一年度减少
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000107054908477/SYS201311030001070549084020_ST/0.png)
,第三年度比第二年度减少
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000107054908477/SYS201311030001070549084020_ST/1.png)
.第一年度当地旅游业收入估计为400万元,要使三年内的投入资金与旅游业总收入持平,则旅游业收入的年平均增长率应是多少?(以下数据供选用:
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000107054908477/SYS201311030001070549084020_ST/2.png)
≈1.414,
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000107054908477/SYS201311030001070549084020_ST/3.png)
≈3.606,计算结果精确到百分位)
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000107054908477/SYS201311030001070549084015_ST/1.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000107054908477/SYS201311030001070549084015_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000107054908477/SYS201311030001070549084015_ST/3.png)
D.
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