单项选择题 A second optical drive has been added to the computer and needs to be referenced as the R: drive by the Microsoft Windows operating system. Which of the following places in Microsoft Windows will BEST accomplish this task?（）

单项选择题 Which of the following locations would a technician use to add a Windows 7 computer to adomain?（）

单项选择题 Which of the following allows a Windows 7 remote user to edit a file offline then automatically update the changes when back in the office?（）