問題詳情

33.What is intended primarily for combustible liquids, and extinguishes a fire by floating on topof the liquid, thus isolating the liquid from a supply of oxygen?
(A)Halon
(B)Foam
(C)Seawater sprinkling system
(D)Carbon-dioxide

參考答案

答案：B
難度：適中0.589744
統計：A(2),B(23),C(9),D(5),E(0)