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單項選擇題

A laser printer prints pages with a gray background. Which of the following is the MOST possible cause of the problem? （）

A.Transfer roller
B.Paper type
C.Print head
D.Fuser

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A printer is not pulling paper out of the paper tray. Which of the following is the MOST possible cause of the problem? （）

A. Pickup rollers
B. Print head
C. Drum
D. Fuser

單項選擇題

Which of the following expansion cards can be installed into an AGP slot?（）

A. Modem
B. Network
C. Video
D. RAID

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