单项选择题

Which of the following is a WiFi device？（）

A.EVDO PCMCIA modem card
B.floppy disk drive add-in card
C.802.11g PCMCIA card
D.56K v.34 PCMCIA modem card

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In a typical PDA， which of the following is the primary input tool？（）

A.voice navigation
B.stylus
C.scroll wheel
D.keyboard

单项选择题

Which of the following modes conserves the most battery power while allowing retrieval of the computing session at a later time？（）

A.Hibernate
B.Suspend
C.Standby
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If an external monitor is attached to a laptop and it does not work， which of the following actions should a technician take FIRST？（）

A.Re-install the operating system.
B.Open and close the cover.
C.Use the function key to activate the monitor.
D.Install new software for the keyboard.

Which of the following is a WiFi device？ （）

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Which of the following is a WiFi device？（）