1.从火灾发生原因上分析 在火灾原因中,因人为因素而引起的火灾,在火灾总起数中占有80～90％的比例(如表1)。在人为因素中,除小孩玩火、放火两种原因外,违反电器安全规定,违反安全制度、吸烟、用火不慎诸原因皆与人体生 1. Analysis from the cause of the fire In the cause of the fire, the fire caused by human factors occupies 80 to 90% of the total number of fires (Table 1). In human factors, in addition to children playing with fire, arson two reasons, in violation of electrical safety regulations, breach of security system, smoking, fire inadvertently all the reasons and human health