美国力争普及家用感烟报警器和自动喷水灭火装置据了解，从１９９２年到现在，美国已有９０％的住宅安装了一个以上的感烟报答器。美国的住宅火灾有一多半发生在没有安装这种报警器的住宅；而在已安装了报警器的住宅，所发生的火灾有三分之一是因为①买了而未装，②装了而... The United States Strives for Popularization of Home-use Smoke Alarm and Sprinkler Systems It is understood that from 1992 to the present, more than 90% of residential buildings in the United States have installed more than one smoke-repression device. More than half of the residential fires in the United States occurred in homes that did not have such alarms installed. In the homes where alarm systems were installed, one third of the fires occurred because ① were purchased without installation ② installed. ..