发生火灾之后怎么办,
问题描述：
发生火灾之后怎么办,
答
escape
答
the body of valve
或者valve body,都是可以的
（求救）
答
switch off lights and gasesleave the fire placesdon't use lift(elevator)when there is a firecover your mouth and nose to aviod breath in smokeif your body is on fire,roll over on the ground.follow eva...