Linux操作系统具有 【13】 的能力，可以利用硬盘来扩展内存。
参考答案：虚拟内存
解析： Linux操作系统具有虚拟内存的能力，可以利用硬盘来扩展内存。
简述酌定量刑情节的概念和种类。
An internet is a combination of networks connected by (1). When a datagram goes from a source to a (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway?
空白（4）处应选择（）
A.destination
B.resource
C.packet
D.source
