单项选择题
Which of the following technologies allows a single piece of hardware to host multiple operating systems simultaneously？（）
A.Virtualization B.SMTP servers C.ThinNet clients D.Terminal servers
单项选择题 Whichofthefollowingwouldacompanyimplementtohelpreducethecostofelectricity？（）
单项选择题 Whichofthefollowingneedstoberecycledduetodangerousamountsofgascontainedinsideitshousing？（）
单项选择题 Whichofthefollowingwillallowmultipleoperatingsystemstorunononeworkstation？（）
