紧急警报广播系统是在普通广播系统的基础上发展起来的一种新型广播系统.虽然两者都是通过广播电台和电视台发送信号,用收音机和电视机接收信号的,但有很大差别.首先,紧急警报广播的内容是有关地震、海啸、战争等可能引起灾难性危险的紧急消息,因此只有面临重大破坏情况时才使用紧急警报广播.其次,普通广播在接收机电源关闭的情况下是听不到广播内容的,而紧急警报广播则完全不同,当发生紧急警报广播时,任何带有附加器的收音机、电视机即使在 The emergency alert broadcasting system is a new type of broadcasting system developed on the basis of the ordinary broadcasting system, and although both transmit signals through radio stations and television stations and receive signals using radio and television sets, there is a big difference , The emergency alert broadcast uses emergency alert broadcasts in the face of major damage only because of the potentially catastrophic dangers of earthquakes, tsunamis, war, etc. Second, regular broadcasts are heard when the receiver is powered off Not broadcast content, and emergency alert broadcast is completely different, when an emergency alarm broadcast, any with attached radio, television even in the