单项选择题 You install Microsoft Windows Vista on a computer. You will share the computer with another user. You need to prvent the user from making unauthorized changes to the computer. What should you do?（）

单项选择题 You need to remove any Microsoft Windows Internt Explorer 7 add-ons in Microsoft Windows Vista Computers that do not have prior approval from the following authorities: Microsoft System manufacturer Service provider What should you do?（）

单项选择题 You need to configure the power settings of your portable computer so that the display turns off when it is inactive and running on battery power. You also need to ensure that the power settings of the hard disk remain unaffected. What should you do?（）