关于价格鉴证档案文书的归档与收集，下列说法错误的是（）。

A.价格鉴证文书是在价格鉴证的实践活动中，有目的地编制和形成的

B.价格鉴证档案工作目前尚无统一的管理办法，只是借鉴和参照其他档案工作的规定

C.价格鉴证文书案卷收集要符合“完整”要求，做到每一年度各种价格鉴证和每个鉴证项目所形成的文件材料，均应收集齐全；每一案卷内重要文件的各种稿本（正本、副本、正件、附件等）也应收集齐全

D.对于经过核实和未经核实、已用作依据和未用作依据的材料严加区分，分别取舍，在价格鉴证结论书所述问题中已经核实的材料，均不立卷

The metric assigned to each network depends on the type of protocol. Some simple protocol, like RIP, treats each network as equals. The (91) of passing through each network is the same; it is one (92) count. So if a packet passes through 10 network to reach the destination, the total cost is 10 hop counts. Other protocols, such as OSPF, allow the administrator to assign a cost for passing through a network based on the type of service required. A (93) through a network can have different costs (metrics). For example, if maximum (94) is the desired type of service, a satellite link has a lower metric than a fiber-optic line. On the other hand, if minimum (95) is the desired type of service, a fiber-optic line has a lower metric than a satellite line. OSPF allow each router to have several routing table based on the required type of service.

（93）是（）

A.flow

B.window

C.route

D.cost