問題詳情

12. 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0.592593
統計:A(0),B(16),C(1),D(5),E(0)

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