单项选择题
Which of the following is needed to recover a system using ERD?（）
A. A bootable flash drive B. The original installation CD/DVD C. An ERD partition on the hard drive D. An ERD for that system
单项选择题 Which of the following utilities can be used to diagnose DirectX hardware and driver problems?（）
单项选择题 Which of the following memory modules is a DDR3 chip?（）
单项选择题 The last step in resolving an end user ticket should be which of the following?（）
