以下哪种（）不能提高资源效率 Which of the following（）can't improve resource efficiency
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以下哪种（）不能提高资源效率 Which of the following（）can"t improve resource efficiency
A．提高物质循环率 Increasing of material recycling rate
B．提高物质排放率 Increasing of emission rate
C．延长产品使用寿命 Extending product life span
D．降低年均增长率 Slowing down annual growth rate
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D