单项选择题

A technician receives a dot matrix printer for repair and the work order states that the printer is only printing one-half of each character. Which of the following should the technician replace？（）

A.print head
B.fuser
C.injector
D.print nozzle

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220-604

A technician receives a dot matrix printer for repair and the work order states that the printer is only printing one-half of each character. Which of the following should the technician replace？（）