单项选择题
A.ink jet
B.thermal
C.impact
D.laser
多项选择题 Atechnicianisinstallingaprinterthatusesaparallelcabletoconnecttoacomputer.Whichofthefollowingpinconfigurationsmightthetechnicianencounter？（）
单项选择题 Aprintertakesalongtimetoprinthigh-endgraphics.WhichofthefollowingwouldbetheFIRSTactiontotake？（）
单项选择题 Atechnicianisperformingscheduledpreventivemaintenanceonalaserprinter.Whichofthefollowingshouldthetechniciancleanorreplace？（）