单项选择题 Which of the following is a laptop monitor technology that uses a backlight to produce an image on the screen?（）

单项选择题 A technician is tasked with clearing all dust covering the fan vents of servers in a small office.Which of the following tools would be the BEST option?（）

单项选择题 Which of the following laptop hardware components requires a re-soldering process in order toreplace properly?（）