单项选择题
A. Press the F8 Key
B. Press the F3 Key
C. Press the F2 Key
D. Press the F6 Key
单项选择题 A technician is replacing fifteen 21 CRTs with 19 LCDs. The storage room is on the other side of the building. Which of the following safety measures should the technician take? （）
单项选择题 Which of the following is an advantage of upgrading to a 64-bit version of Windows? （）
多项选择题 Which of the following hardware is hot pluggable?（）