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问题 单项选择题

A half-height container is used（）.

A.to carry cargoes of low density

B.when stowage space is limited

C.to carry cargoes such as steel products or drums

D.to double the stowage capacity of the vessel

答案

参考答案：C

选择题

观察下列几组数：①2，3，4；②12，15，20；③8，15，17；④7，24，25其中能作为直角三角形的三边长的有 [ ]

A、1组

B、2组

C、3组

D、4组
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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.

46（）

A．adaptability

B．scalablity

C．route

D．security
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