单项选择题
Which of the following components is part of the ink dispersion system？（）
A.Print Heads B.Cleaning heads C.Pickup Roller D.Charge Assembly
多项选择题 Duringthephotoconductorpreparationstep，residualchargecanberemovedbywhichofthefollowing？（）
单项选择题 InwhichofthefollowingsectionsofanMFPwouldatechnicianfindaXenonLamp？（）
单项选择题 Apolygonmirrorispartofwhichofthefollowingassemblies？（）
