多项选择题 A technician installed a new application on a Windows XP desktop. After the application wasinstalled, the technician rebooted the desktop and received a bluescreen error. Which of thefollowing steps should the technician perform?（） (Select TWO).

单项选择题 An advantage of a corporate centrally-managed anti-virus solution over a standalone anti-virus program is a corporate anti-virus solution:（）

单项选择题 If a technician suspects that the voltage being delivered to a desktop computer’s power supply is insufficient or incorrect, which device should be used to determine the correct voltage?（）