单项选择题
（）enables a computer processor to process two sets of instructions at the same time.
A.Multi-tasking B.Hyper-threading C.Hyper-caching D.Caching
单项选择题 （）is commonly performed on CPUs and video cards to allow users to get enhanced performance.
单项选择题 Which of the following storage devices is not an example of an optical storage device?（）
判断题 "POST errors in the 600-699 range generally indicate Floppy disk drive errors.
