单项选择题
A.cd B.md C.dir D.rd
When replacing a laptop’s hard drive, which of the foll...
单项选择题When replacing a laptop’s hard drive, which of the following may need to be updated?（）
A. The CD drive B. The network drivers C. The system OS D. The system BIOS
Which of the following is a reason why Bob, a technicia...
单项选择题Which of the following is a reason why Bob, a technician, should install case fans in the front of acomputer case?（）
A. It forces hot air out of the PC B. The fan is easier to remove and clean C. It forces cooler air into the power supply quickly D. It forces cooler air across the motherboard
When Bob, a technician, powers up a desktop PC, the uni...
单项选择题When Bob, a technician, powers up a desktop PC, the unit will repeat three short beeps and will not POST. Which of the following is MOST likely the problem?（）
A. The memory is failing. B. The CPU is overheating. C. The hard drive is not attached properly. D. The operating system is not installed.
