信息防护是人民防空安全防护的重要组成部分,涉及的内容广泛,是一项系统工程,包括物理层安全、系统层安全、网络层安全和管理层安全等.%Information protection is an important part of the civil air defense. It is a system engineering that involves extensively, generally includes the physical security, system security, network layer, application layer and security management, etc.
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