单项选择题
	A.5
	B.M
	C.F8
	D.Ctrl-Alt-Delete
单项选择题 Amirroredrootdiskneedstobereplaced.Whichofthefollowingcommandswillclearthebootrecordonthefailingdisk?()
单项选择题 Asystemadministratorhasdeterminedarootmirroreddisk,hdisk1,needstobereplaced.Therootvolumehasbeenunmirrored.Whatisthenextsteptoremovethediskdrive?()
单项选择题 Followingasystemboot,thedisplayindicatesthatpreviouslydetectedhardwareismissing.Whatcommandshouldbeusedtoidentifythemissinghardware?()