問題詳情

49. According to the article, what will be the primary factor that causes deaths and injuries when dust explosion takes place infactories?
(A) increase of pressure wave
(B) collapse of factory buildings
(C) lack of emergency aids
(D) insufficiency of professional knowledge

參考答案

答案：A
難度：適中0.64
統計：A(16),B(3),C(4),D(1),E(0)

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