单项选择题
A.ink jet B.thermal C.impact D.laser
A.9 pin D-type B.36 pin Centronics C.25 pin Centronics D.13 pin D-type E.25 pin D-type
A.Recommend the use of smaller graphics. B.Replace the toner cartridge. C.Recommend connecting fewer users to the printer. D.Check the amount of memory installed.