A technician receives a work order requesting the installation of an NLX motherboard into a micro ATX case. Which of the following should the technician recognize？（）

单项选择题WheninstallinganewPlugandPlaysoundcard，atechnicianshouldturnoffandunplugthecomputer；removethecomputer’scover；locatethesoundcardslot，insertandsecurethecardintheslotand：（）

A.plug in and turn on the computer； let Windows recognize the new hardware and install the driver.
B.plug in the computer； let Windows recognize the new hardware and plug in the speakers.
C.let Windows recognize the new hardware； install the driver and plug in the speakers.
D.turn on and plug in the computer； let Windows recognize the new hardware and install the driver.

单项选择题AtechnicianistroubleshootingaCD DVDdrive.Thereisadiskinthedriveandthetraywonteject.WhichofthefollowingactionsshouldthetechniciantakeFIRST？（）

A.Shutdown， restart and verify that the BIOS recognizes the drive and try again.
B.Replace the CD/DVD drive.
C.Pry the tray open with a small， flat head screwdriver.
D.Place the end of a paper clip in the emergency eject pinhole on the CD/DVD drive.

单项选择题Atechnicianreceivesanewprinterforrepairandtheworkorderstatesthatwhenpoweredontheprintermakesaloudnoiseandwillnotprint.Whichofthefollowingactionsshouldthetechniciantake？（）

A.Install new drivers on the computer.
B.Install a new ink cartridge.
C.Install a print head on the printer.
D.Remove the packing tape from the print head.

单项选择题Alaserprinterhasaverticallyrepetitiveprintdefect.Beforeattemptingtorepairtheprinter，atechnicianshoulddetermine：（）

A.the distance between the spots.
B.which paper tray was used to print the document.
C.which driver was used to print the document.
D.which application was used to print the document.

单项选择题Atechnicianreceivesadotmatrixprinterforrepairandtheworkorderstatesthattheprinterisonlyprintingone-halfofeachcharacter.Whichofthefollowingshouldthetechnicianreplace？（）

A.print head
B.fuser
C.injector
D.print nozzle