单项选择题
Which of the following printers requires a specialized paper in order to operate?（）
A.Thermal B.Laser C.Inkjet D.Impact
单项选择题 Which of the following is the correct connector for an internal floppy drive?（）
单项选择题 Which of the following ports is the default for HTTP?（）
单项选择题 Which of the following keys is pressed to enter the Windows boot options after POST?（）
