竣工验收必须有水利水电工程( )的工程质量评定报告,竣工验收委员会在其基础上鉴定工程质量等级。
A.监理单位
B.质量监督机构
C.检测单位
D.水行政主管部门
参考答案:B
下列关于文学常识的说法,有错误的一项是( )(3分)
A.我们学过的鲁迅的作品《风筝》《雪》选自散文诗集《野草》,《藤野先生》《从百草园到三味书屋》选自散文集《朝花夕拾》。
B.《雷电颂》选自历史剧《屈原》,作者是我国著名的文学家、历史学家郭沫若。
C.《五柳先生传》《马说》和《送东阳马生序》这三篇名文的作者分别是东晋的陶渊明、唐代的韩愈和宋代的宋濂。
D.《再塑生命》选自《假如给我三天光明》,作者是美国女作家海伦·凯勒。
The metric assigned to each network depends on the type of protocol.Some simple protocol, like RIP, treats each network as equals. The(1) of passing through each network is the same; it is one(2)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 (3) through a network can have different costs (metrics). For example, if maximum(4) is the desired type of service, a satellite link has a lower metric than a fiber-optic line. On the other hand, if minimum(5)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.
(5)是()
A.delay
B.stream
C.packet
D.cost