单项选择题
A. display resolution and brightness.
B. power consumption and output intensity.
C. power savings of a comparable crt monitor and the lcd.
D. the darkest and lightest displayed output.
单项选择题 A user can no longer launch their word processing program. The program worked fine yesterday.Which of the following options could BEST be used to fix the word processing program?（）
单项选择题 A user is having problems printing. The technician believes the printer may be out of ink. Which of the following troubleshooting steps should be performed NEXT?（）
单项选择题 A user is currently running Windows XP Media Center 32-bit and wants to upgrade to WindowsVista. An in-place upgrade is required. Which of the following versions can be used to accomplish this?（）