单项选择题

下面的有向图,其结点可以排成多少个不同的拓扑序列?()

A.3
B.5
C.7
D.9

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单项选择题
The Pentium includes hardware for both segmentation and paging. Both mechanisms can be disabled, allowing the user to choose from four distinct views of memory. Now the most frequently used view(such as Unix System V) is ().

A.Unsegmented unpaged memory
B.Unsegmented paged memory
C.Segmented unpaged memory
D.Segmented paged memory

单项选择题
超标量技术已为奔腾处理器普遍采用。所谓超标量技术是()。

A.细化流水、增加级数
B.不采用多指令分发技术
C.多建立几条流水线
D.把普通流水线的主频提高

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