单项选择题 Bob, a support technician, is trying to locate a particular registry key using REGEDIT.EXE, on aWindows 2000 PC. Which of the following is the BEST method of doing this?（）

单项选择题 A user reports that every time they start up their computer it stops with a bluescreen error. Whichof the following methods will give an alternate method of trying to start up a Windows computer?（）

单项选择题 A user copied files from a CD and now the files can only be opened as read-only. Which of the following utilities can be used to allow the user the ability to edit the files?（）