[KongchangAI]
Unverified86% confidenceDecision RuleTime unknown

选购前必须确认管道类型与口径:家用燃气管多为DN15(4分)或DN20(6分),且需区分天然气/液化气/煤气;智能阀应套在灶前阀之后、灶具之前,卡箍式外夹机型比断管改装式安装更友好

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