【单选题】在SDH的复用单元中,()是用来支持SDH通道层连接的信息结构。
【简答题】在SDH中,容器是用来()的信息结构,我国目前只涉及()。
【单选题】-Mrs. White looks old for her age. -Yes. It worries her most ________ her hair is turning gray. [ ]
【简答题】在 SDH 中,容器是用来()的信息结构。
【单选题】在SDH的复用单元中,虚容器是用来支持SDH()连接的信息结构。
【单选题】The thought___her father may lose his eye-sight worries her.
【单选题】. She is in a poor of health, which worries her parents much.
【单选题】______worries her a lot that her husband gets homelater and later. [ ]
【单选题】---Mrs. White looks old for her age. ---Yes. It worries her most ______ her hair is turning gray. [ ]
【单选题】She is in a poor of health, which worries her mother much.