单项选择题
A.EVDO PCMCIA modem card
B.floppy disk drive add-in card
C.802.11g PCMCIA card
D.56K v.34 PCMCIA modem card
单项选择题 InatypicalPDA，whichofthefollowingistheprimaryinputtool？（）
单项选择题 Whichofthefollowingmodesconservesthemostbatterypowerwhileallowingretrievalofthecomputingsessionatalatertime？（）
单项选择题 Ifanexternalmonitorisattachedtoalaptopanditdoesnotwork，whichofthefollowingactionsshouldatechniciantakeFIRST？（）