单项选择题
A. Clean the heatsink assembly of debris.
B. Turn the fan off when the AC adapter is attached.
C. Turn the fan to low in the BIOS.
D. Replace the processor and fan.
单项选择题 A technician is installing a parallel PCI card. Which of the following is the IEEE standard for parallel?（）
单项选择题 A customer, Jill, has a dim image on her internal LCD panel, but when connecting to an external display, the image is fine. Which of the following is MOST likely the cause?（）
单项选择题 A user attempts to login to a bookmarked site but is prompted for their social security number,mother’s maiden name and date of birth. Which of the following has MOST likely happened?（）