The paper makes detailed contrastive analysis of the grade protection system and classified protection system in the process of system construction from the applicable scope , construction procedure , system grading , schematic design , system implementation , sys-tem evaluation and inspection , information system halt, methods of bidding and purchasing , etc.By comparison, these two systems are different in the implementation object , competent department , construction procedure , bidding and purchasing , etc.%从适用范围、建设流程、系统定级、方案设计、系统实施、系统测评与检查、信息系统中止、招标采购方式等角度,对等级保护制度和分级保护制度在系统建设过程中的异同点进行详细对比分析,经比较这两种制度在实施客体、主管部门、建设流程、招标采购等多方面存在着不同点。
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