関連ワード:  what type of fire extinguisher is class c    what type of fire extinguisher is used for class c    what type of fire is class c fire extinguisher rated for    what fire extinguisher is class c    what class of fire extinguisher is co2    what class is the most common type of fire extinguisher    what type of fire extinguisher is class b    what class of fire extinguisher  
結果 : what type of fire extinguisher is class c