関連ワード:  class a vs class c fire extinguisher    class b vs class c fire extinguisher    class b and class c fire extinguishers    class a and c fire extinguisher    class c vs class d fire extinguisher    class c vs class k fire extinguisher    class a vs class c fire rating    class a vs class b fire extinguisher  
結果 : class a vs class c fire extinguisher