单项选择题
A. A new sound card
B. A new speaker
C. A BIOS update
D. A hardware volume control
单项选择题 When adding a FireWire adapter to a laptop, which of the following ports would MOST likely beused? （）
单项选择题 After installing a new optical drive into a workstation, which of the following will ask for anacknowledgement?（）
单项选择题 When connecting a PC to a television in order to stream a movie, which of the following connector types would only need one cable?（）