单项选择题
A.Install new drivers on the computer.
B.Install a new ink cartridge.
C.Install a print head on the printer.
D.Remove the packing tape from the print head.
单项选择题 Atechnicianhasaddedmemorytoalaserprinter.Toallowtheprinterdriversoftwaretousetheadditionalmemory，theamountofmemoryshouldbemodifiedin：（）
单项选择题 Whichofthefollowingprintersusesachargeddrumtotransfertonertopaper？（）
单项选择题 Whichofthefollowingitemcolorizesthepaperusingatwo-componentlaserprinter？（）