接入网分层模型中接入承载处理功能层、电路层和通道层构成了传送层。
错误
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温室气体的增多加剧了温室效应。
Ifyouarewillingtobuythewholelotonceandforall,wecangrantyouadiscountof8%ontheprice.
CIP术语中买卖双方风险转移在( )。
Wearepleasetogiveyouanorderfor3,000computersincurrentstockatthepricesyouquoted.
Wearepreparetoofferourcomputerstoyouatthespecialdiscountrateof15%.