单项选择题 设A，B为任意二集合，已知A-B=A，下述结论 Ⅰ.B-A=B Ⅱ.A∩B=B Ⅲ.B=A 中哪个（些）为真？（）

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 超标量技术已为奔腾处理器普遍采用。所谓超标量技术是（）。