三峡大坝一大作用直接是长江水由二类变为四类水质。四类逆变为二类需要的费用,
4,000亿立方米*5圆=20,000亿
三峡大坝一大作用直接是长江水由二类变为四类水质。四类逆变为二类需要的费用,
4,000亿立方米*5圆=20,000亿
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说说水质如何怎样哪般恶化,
-弓尒-
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07/24/2019 postreply
16:50:25
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您就别为难那些张口就来的人了!嘴是两张皮,让它们翻飞去吧
-一塌不糊涂-
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07/24/2019 postreply
17:48:36
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瞎抹黑,有大BA水会更平稳的流向下游,干枯期要少,有利水质。而不是雨季都流海里了,旱季水少。
-国人情怀-
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07/24/2019 postreply
20:19:35
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