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三峡工程是世界防洪效益最为显著的水利工程,它能有效控制长江上游洪水,增强长江中下...
三峡工程是世界防洪效益最为显著的水利工程,它能有效控制长江上游洪水,增强长江中下游抗洪能力.据相关报道三峡水库的防洪库容为22 150 000 000m3,用科学记数法可记作 m3.
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A.
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C.
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D.1
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