下列哪些物资的燃烧属于A类火灾。() (A)木材 (B)羊毛 (C)沥青 (D)乙炔 (E )酒精 (F) 鱼粉
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举一反三
【简答题】You wish to study at a university in the UK. You have talked to your instructor, and she has advised some points that you should check before you make the decision. Read your teacher’s note. Then writ...