其实这个问题,早在70年代就提上日程了。当时在美国,有关部门发现消防队员患癌的发病率有惊人的增长。这令人们立刻想到,消防员在消防工作中,接触毒气最多。1982年,美国希尔顿酒店的一间客房发生火警,造成12人丧生。这12之中,除1人之外,其他11人都并非死在着火的房间内, In fact, this problem was put on the agenda as early as the 1970s. At that time in the United States, the departments concerned found that the incidence of cancer among firefighters had an astonishing increase. This makes people think immediately, firefighters in the fire work, exposure to the most gas. In 1982, a fire broke out in a room at the Hilton Hotel in the United States, killing 12 people. Among these 12, all but one were not dead in the burning room,