[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

即热式和燃气热水器内部为盘管结构、水垢附着面小,应选可循环冲洗的低浓度柠檬酸溶液(浓度5%-8%),避免高浓度酸残留腐蚀铜管或换热器

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82%
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