[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

标注'可冲厕所'的玉米砂单次冲入量应控制在拳头大小(约2-3个结团)以内,且需为直排下水管道;老旧楼房、化粪池或管径细的马桶即使是可溶解砂也易堵塞

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