A.paper position. B.shaft rotation. C.magnetic flux. D.laser beam strength.
单项选择题Whichofthefollowingfunctionsisassociatedwiththedeveloperunit？（）
A.Supplies toner to the photoconductor B.Charges the surface of the photoconductor C.Writes the latent image on the photoconductor D.Cleans the photoconductor
