单项选择题
A.Dual scan
B.Active matrix
C.Passive matrix
D.Active scanning
单项选择题 An8XAGPvideocardwillnotfitintotheAGPslot.Whichofthefollowingmaybethecause？（）
单项选择题 Whichofthefollowingmakestonersticktopaper？（）
单项选择题 Atechnicianreceivesalaptopworkorderstatingthatthemousepointerfromthetouchpadismovingrandomlyaroundthescreen.WhichofthefollowingshouldthetechniciandoFIRST？（）