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问题 单项选择题

政府价格主管部门应当向听证会参加人送达相关材料的期限是听证会举行( )目前。

A．5
B．10
C．15
D．20

答案

参考答案：C

解析： 《价格法》第二十条规定，听证会举行15日前，政府价格主管部门应当向听证会参加人送达材料。

单项选择题

The metric assigned to each network depends on the type of protocol. Some simple protocol, like RIP, treats each network as equals. The ___44___ of passing through each network is the same; it is one ___45___ 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 ___46___ through a network can have different costs (metrics). For example, if maximum ___47___ is the desired type of service, a satellite link has a lower metric than a fiber-optic line. On the other hand, if minimum ___48___ 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.

45（）

A．flow

B．hop

C．process

D．route
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单项选择题

2m3水中加50％敌敌畏1克，该水体浓度为（）

A.0.25ppm

B.0.5ppm

C.1ppm

D.2ppm
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