What is the standard IRQ for the keyboard？（）

单项选择题Whichcleaningproductshouldbeusedfortheinsideofacomputer？（）

A.glass cleaner
B.a simple ammonia and water solution followed by an antistatic solution
C.a bleach solution followed by water
D.compressed air

单项选择题Whenreplacingapowersupply，whatMUSTthetechnicianobserve？（）

A.voltage
B.current
C.wattage
D.resistance

单项选择题WhichIPblockisdesignatedforprivatenetworkuse？（）

A.127.0.x.x
B.169.0.x.x
C.190.100.x.x
D.192.168.x.x

单项选择题WhichprocessorusesaSlot1configuration？（）

A.AMD Duron
B.AMD Thunderbird
C.Intel Pentium
D.Intel Pentium II

多项选择题ALaserprinterkeepsgettinga MemoryOverflow errorwhenprintingaparticulardocument.Whichthreeofthefollowingarepossiblefixes？（）

A.reset the printer cable
B.replace the toner cartridge
C.decrease the print resolution
D.add more RAM to the printer
E.reduce the RET（Resolution Enhancement Technology）