A.笔记本屏幕有显示、投影仪不显示; B.笔记本屏幕、投影仪均有显示; C.投影仪有显示、笔记本屏幕无显示. 切换方法为按Fn键加F3(康柏的机子是这样的,也就是加上那个上面有个小显示器图标的键啦) |
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