单项选择题
A.18V B.28V C.20V D.24V
A.CDROM B.RAM C.ROM D.EPROM
A.ZPW•ZXJ B.ZPW•PJZ C.ZPW•JZ D.ZPW•PJC
A.ZPW•S B.ZPW•SH C.ZPW•SHP D.ZPW•SHH
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