单项选择题 Your computer has the following hardware configuration: 512 MB of RAM 10-GB hard disk 933-MHz processor 64-MB video adapter. You want to install Microsoft Windows Vista on this computer. You need to identify which hardware component fails to meet the minimum hardware requirements. Which hardware component should you choose?（）

单项选择题 You plan to give an on-site presentation. The external display available for your audience is a 42-inch flat panel monitor. You need to ensure that the presentation on the monitor of your computer is duplicated on the external monitor for the audience. What should you do?（）

单项选择题 You connect your computer to a multimedia projector. When you play a video, you cannot hear the audio. You n eed to ensure that the projector provides audio and video playback. What should you do?（）