单项选择题
A.Accessibility options.
B.Security Center.
C.User accounts and the Advanced tab.
D.Windows Firewall.
单项选择题 AtechnicianislockedoutofadesktopsBIOSbecauseofaforgottenpassword.Whichofthefollowingisamethodofremovingthepassword？（）
单项选择题 Whichofthefollowingistherecommendedmaintenanceforalaserprinter？（）
单项选择题 Alaserprinterissentforrepairandtheworkorderindicatesthatthereisanimageprintingproblem.WhichofthefollowingshouldatechniciandoFIRSTtoconfirmthisproblem？（）