单项选择题
Which of the following is an advantage that a USB mouse has over a PS/2 mouse?（）
A. A USB mouse uses less power B. A USB mouse is more portable C. A USB mouse is hot swappable D. A USB mouse is more secure
单项选择题 Which of the following will help dissipate heat through the heat sink when upgrading a CPU? （）
单项选择题 Which of the following printers requires a specialized paper in order to operate?（）
单项选择题 Which of the following is the correct connector for an internal floppy drive?（）
