Using the CMYK color model， the color purple is produced by combining cyan and which other color？（）

单项选择题Whichofthefollowingisthepurposeofatorquelimiterinaroller？（）

A.To reduce wear and tear on rollers.
B.To provide resistance but still allow some slippage.
C.To limit the amount of movement by media.
D.To make it easier to replace rollers.

单项选择题Thepolygonmirrorislocatedinwhichofthefollowingcomponents？（）

A.Developer unit
B.Scanner unit
C.Fuser unit
D.Laser unit

单项选择题Acustomerisconcernedaboutexcessivemediajammingintheirdevice.WhichofthefollowingistheFIRSTthingatechnicianshouldcheck？（）

A.Media feed rollers
B.Cassette drawers
C.Fusing section
D.Device log data

单项选择题Thepropersafetyguidelinesforhandlinganydevicespecificconsumablescanbefoundinwhichofthefollowingdocumentation？（）

A.Material Safety Data Sheets
B.Installation Guides
C.Consumer Reports
D.Devices Parts Catalog

单项选择题Whichofthefollowingcomponentsispartoftheinkdispersionsystem？（）

A.Print Heads
B.Cleaning heads
C.Pickup Roller
D.Charge Assembly