单项选择题 Which of the following tools can be used to test if a 24-pin power cable is outputting correct voltage?（）

单项选择题 A laptop LCD screen needs to be replaced. Which of the following tools would be BEST used toopen the case?（）

单项选择题 A new processor was recently installed on a one year old motherboard, replacing the original processor. The processor is on the motherboard’s supported processor list and was double checked for proper installation. However, the PC refuses to POST properly and displays no video onscreen. Which of the following is the MOST likely issue?（）