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化学需氧量越大，说明水体受到有机物的污染越严 重。
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化学需氧量越大，说明水体受到有机物的污染越严 重。
A、正确
B、错误
正确答案：A
Tag：
水体
有机物
化学
时间：2025-12-07 13:08:56
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