单项选择题
A. Factory Recovery Partition
B. Use Safe Mode
C. Last Known Good Configuration
D. Purchase a copy of the original OS
单项选择题 Which of the following ports is MOST likely used for high-end graphics cards?（）
单项选择题 A user has purchased a laptop that has no means to charge the battery. Which of the followingwould the user MOST likely purchase?（）
单项选择题 Which of the following is the NEXT step in the troubleshooting theory after identifying the problem?（）