单选题The customer has a dedicated ink jet fax machine that is used to send and receive faxes only from the corporate office. The user complains of streaks on the received faxes while the internal self-prints are fine. Which of the following should a technician recommend？（）AClean the scanner glass on the distant machine.BClean the scanner glass on the local machine.CClean the printer head on the local machine.DCall the telephone company to increase the line signal level.
单选题
The customer has a dedicated ink jet fax machine that is used to send and receive faxes only from the corporate office. The user complains of streaks on the received faxes while the internal self-prints are fine. Which of the following should a technician recommend？（）
A
Clean the scanner glass on the distant machine.
B
Clean the scanner glass on the local machine.
C
Clean the printer head on the local machine.
D
Call the telephone company to increase the line signal level.
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