A user needs assistance in troubleshooting a printing problem. The print job seems to process correctly at the workstation but never comes out of the printer. Which of the following should atechnician recommend?（）
A. Restart the print job in the print queue.
B. Print a test page from the printer properties.
C. Run the Add Printer Wizard.
D. Restart the print spooler service.
参考答案：D
