本文件是一项研究的结果，比较了传统B/A内攻方式与在建筑外部使用火场烟气冷却并穿戴个人防护装备后再进入时，消防员身体受到污染物影响的程度。
This document is the result of a study comparing the level of contaminants affecting a firefighter's body in a traditional B/A attack, compared to when using fire gas cooling and PPE from the outside of the building before entering.