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1、用天然氣四季都要注意排氣通風。若門窗緊閉，長時間使用熱水器，室內空氣耗盡，會發生缺氧窒息 。 2、熱水器必須安裝排放廢氣的煙道，煙道排氣必須放在大氣中 。 3、要防止火焰被湯水溢熄或被風吹熄。請您使...
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