多项选择题
Which of the following printers sprays the paper？（）
A.impact B.laser C.thermal D.solid ink E.ink jet
单项选择题 Whichofthefollowingshouldatechnicianusetocleantheglassonaflatbedscanner？（）
单项选择题 Whichofthefollowingprintersprintsmulti-partformsatonce？（）
多项选择题 Atechnicianisinstallingaprinterthatusesaparallelcabletoconnecttoacomputer.Whichofthefollowingpinconfigurationsmightthetechnicianencounter？（）
