several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measuremen，就需要用该功能进行实时监控。同时，实时监控还应识别尽可能多的格式，具备对网页的监控和从端口进行拦截病毒的功能。
4、快速、方便的升级能力
和个人版杀毒软件一样，只有不断更新病毒数据库，才能保证网络版防病毒软件对新病毒的查杀能力。升级的方式应该多样化，防病毒软件厂商必须提供多种升级方式，特别是对于公安、医院、金融等不能连接到公共互联网络的用户，必须要求厂商提供除Internet以外的本地服务器、本机等升级方式。自动升级的设置也应该多样。
5、智能安装、远程识别
对于中小企业用户，由于网络结构相对简单，网络管理员可以手工安装相应软件，只需要明确各种设备的防护需求即可。但对于计算机网络应用复杂的用户(跨国机构、国内连锁机构、大型企业等)选择软件时，应该考虑到各种情况，要求能提供多种安装方式，如域用户的安装、普通非域用户的安装、未连网用户的安装和移动客户的安装等。
6、管理方便，易于操作
系统的可管理性是系统管理员尤其需要注意的问题，对于那些多数员工对计算机知识不是很了解的单位，应该限制客户端对软件参数的修改权限；对于软件开发、系统集成等科技企业，根据员工对网络安全知识的了解情况以及工作需要，可适当开放部分参数设置的权限，但必须做到可集中控管。对于网络管理技术薄弱的企业，可以考虑采用远程管理的措施，把企业用户的防病毒管理交给专业防病毒厂商的控制中心专门管理，从而降低用户企业的管理难度。
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design
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