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判斷題

滅火時(shí)由于事情緊急，消防污水可以直接進(jìn)入雨水排水系統(tǒng)。

答案：錯(cuò)誤

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聚合物均為純凈物。

答案：錯(cuò)誤

潤(rùn)滑油為混合物。

答案：正確

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