Unverified50% confidenceDecision RuleTime unknown
燃气报警器必须匹配气体类型：天然气(甲烷)比空气轻，探头应装在灶具上方0.3m内、距天花板≤0.3m；液化气(丙丁烷)比空气重，探头应装在下方距地面≤0.3m，装错位置等于失效
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