A.1mm B.2mm C.3mm D.4mm
A.shjkbk@online.sh.cn B.shjkbk.online.sh.cn C.online.sh.cn@shjkbk D.cn.sh.online.shjkbk
A.162mm B.163mm C.164mm D.165mm
A.152mm±2mm B.156mm±2mm C.165mm±2mm D.190mm±2mm
A.物理層 B.數(shù)據(jù)鏈路層 C.傳輸層 D.網絡層