单项选择题
A customer is concerned about excessive media jamming in their device. Which of the following is the FIRST thing a technician should check？（）
A.Media feed rollers B.Cassette drawers C.Fusing section D.Device log data
单项选择题 Thepropersafetyguidelinesforhandlinganydevicespecificconsumablescanbefoundinwhichofthefollowingdocumentation？（）
单项选择题 Whichofthefollowingcomponentsispartoftheinkdispersionsystem？（）
多项选择题 Duringthephotoconductorpreparationstep，residualchargecanberemovedbywhichofthefollowing？（）
