A technician receives a printer that is printing ink smudges on random sheets of paper. Which of the following should the technician try FIRST？（）

In a microbarograph，the pen should be checked and the ink well filled（）.

_______ her pen in ink, when she heard the tramping of little feet along the hall, and then a pounding at her door.

______ her pen in ink, when she heard the tramping of little feet along the hall, and then a pounding at her door.

_______ her pen in ink, when she heard the tramping of little feet along the hall, and then a pounding at her door.

_______ her pen in ink, when she heard the tramping of little feet along the hall, and then a pounding at her door.

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？（）

Which of the following components is part of the ink dispersion system？（）

When using an ink jet printer， a user reports that colors seem to be missing intermittently. Which of the following is MOST likely the cause？（）

Director软件画板中的Ink效果中Transparent指的是（）。