单项选择题
A. The printer needs to be sent to the manufacturer for maintenance.
B. The printer’s firmware needs to be updated.
C. A printer system reset must be performed.
D. The maintenance page counter must be reset.
单项选择题 A technician has just installed a new power supply into a desktop computer and now the computer will not turn on. Which of the following is the MOST likely cause?（）
单项选择题 A legacy PCI IDE controller card does not recognize a new IDE HDD. Which of the followingmaintenance techniques would BEST resolve this situation?（）
单项选择题 In order to ensure there is proper airflow in a new computer, which of the following should be performed?（）