单项选择题
Which of the following items can be used as a discharge lamp？（）
A.Halogen lamp B.Light Emitting Diodes （LED） C.Fuser lamp D.Cleaning roller
单项选择题 Whichofthefollowingfailedcomponentswouldberesponsibleforthefuserunitnotheatingproperly？（）
单项选择题 Whichofthefollowingdevicescanrouteelectricalsignalsonlywhenactivatedbyanexternalcontrolsignal？（）
单项选择题 WhichofthefollowingistheFIRSTstepatechnicianshouldtakewhentroubleshootingadeviceissue？（）
