Unverified82% confidenceCautionTime unknown
不要为省事在燃气灶排烟或热水器烟道中混用不同管径的转换接头而不做密封，管径突变处风阻骤增，是排烟效率下降和回烟的常见隐患
1
Sources
82%
Confidence
Long-term
Relevance
-
First Seen
Sources
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