单项选择题
Which of the following would be an example of a biometric device？（）
A.USB security key B.smart card reader C.thumb print reader D.encryption password
单项选择题 ToforceausertouseCtrl-Alt-Deletetologintothecomputer，atechniciancangotoControlPanelthen：（）
单项选择题 AtechnicianislockedoutofadesktopsBIOSbecauseofaforgottenpassword.Whichofthefollowingisamethodofremovingthepassword？（）
单项选择题 Whichofthefollowingistherecommendedmaintenanceforalaserprinter？（）
