問題詳情
53 If someone opens a door just before self-extinguishment is achieved, the entire room may turn into flameswith fresh air flowing into the hot fire source and mixing with the unburned fuel volatiles. Thisphenomenon is known as________ .
(A)Backdraught
(B)Smoldering
(C)Flamming
(D)Fuel-controlled
參考答案
答案：A
難度：適中0.5
統計：A(1),B(0),C(1),D(0),E(0)