??? ?????: ????? ????? ????? ?? ????? ?????? ??????? ???? ??? ??????? ?? ????? ?? ???????? ??? ????? ???? ????? ?? ????? ????? ??????? ???????? ??? ?????.The NFPA has found that the majority of fires in offices come about in regions devoid of smoke detectors. Smoke detectors needs to be positioned in just about every place and hallway of commercia