[KongchangAI]
Unverified80% confidenceCautionTime unknown

存在积水无法排出的完全堵塞时,不要用固体颗粒型,颗粒会沉在积水底部无法接触堵塞物且高浓度碱液滞留腐蚀管道,此时应选液体型或先物理疏通

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