单项选择题
A corporation plans to replace older office PCs with energy efficient personal computers in their 24 hour help desk department. Which of the following would be the BEST choice？（）
A.Tablet notebooks with LCD monitors B.Thin clients with LCD monitors C.Thin clients with CRT monitors D.Notebook computers with LCD monitors
单项选择题 Whichofthefollowingtermsisusedwhenprintingdataonboththefrontandthebackofpaper？（）
单项选择题 Whichofthefollowingtechnologiescansaveserverspaceandcoolingrequirements？（）
多项选择题 Whichofthefollowingmethodseffectivelyremovesdatafromaharddrivepriortodisposal？（）
