在精确制导导弹中使用的操作系统应属于下列哪一类？

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

单项选择题As an important phase in software development, software design is the continuation of software requirement analysis phasE．Ⅰ．software structure Ⅱ．software procedureⅢ．software module Ⅳ．software documentwhich of the following should be included in software design phase