X.25与帧中继对比描述正确的是()
AC
暂无解析
Youlooknotabitolderthanyoudid5yearsago.Howdoyou__________soyoung?
—IsthereanythingelseIcandoforyou?
—______.
Wherewas__________youmetwiththefamousscientist?
Ithinkthispairofshoesdoesn’tfityou.It’sabitlarge.You’dbettergeta_____.
我国外汇收入最重要的来源是()。
