单项选择题 Which of the following types of portable media offers the LARGEST storage capacity?（）

单项选择题 A Windows 7 user has documents spread throughout multiple hard drives and wishes to organizeand search them in one panel. Which of the following features should they be shown?（）

单项选择题 Users in an office routinely work with large graphics files. Which of the following preventivemaintenance tools can assist in maintaining system performance?（）