3-hour-wuta-ƙididdigar kofa 8″ kauri, kofa mai sarrafa wuta, ƙofar anti wuta

Otal din ya kasance muhimmin sashi na rigakafin gobara, kuma yana da mahimmanci musamman don yin aiki mai kyau na rigakafin gobara na ciki. Yakamata a samar da kofofin wuta na otal a matattakala, dakin rarraba wutar lantarki, da rijiyar bututu. Kofofin wutan otal yakamata su zama aji A, wato, matakin karfe A kofofin wuta.

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