多项选择题
A.reset the printer cable
B.replace the toner cartridge
C.decrease the print resolution
D.add more RAM to the printer
E.reduce the RET（Resolution Enhancement Technology）
单项选择题 Auserreportsthatwhileprintingalargedocument，thelocalprinterfailstoprintandthedocumentcannotbedeletedfromthequeue.WhatistheMOSTlikelycauseoftheproblem？（）
单项选择题 AcustomerreceivesaCD-RWdiskfromacomputervendor.Thecustomertriestoreadthediskinacomputerwitha4XCD-ROMdriveandisunabletoreadanyinformation.ThecustomertriestheCD-RWdiskona32XCD-ROMdriveanditreadscorrectly.Whatisthecauseofthisproblem？（）
单项选择题 Ausercomplainsthatacomputermonitorisexperiencingajitter.Replacingthemonitorandvideocarddoesnotfixtheproblem.Whichofthefollowingcouldbecausingtheproblem？（）