单项选择题
Which of the following is the FIRST step a technician should take when troubleshooting a device issue？（）
A.Gather information from the customer. B.Isolate the problem on the device. C.Read the service documentation for possible causes. D.Check the parts life counters.
单项选择题 Howshouldaservicerepresentativeprovideclosureattheendofacallforaclient？（）
单项选择题 Scheduledpreventativemaintenancevisitsshouldbecarriedout：（）
单项选择题 Whichofthefollowingtypeoflampisusedforheatingafuser？（）
