单项选择题
USB 2.0 supports a maximum data transfer speed of （）Mbps.
A.12 B.80 C.480 D.10
单项选择题 The Serial ATA (SATA) cables can extend up to （）.
单项选择题 What does DVI stand for?（）
单项选择题 （）is a technique used for illumination behind the liquid crystal display that makes LCDs easier to read.
