步数字体系是一个将复接、()及交换功能融为一体,并由统一网管系统操作的综合信息传送网络。
参考答案:线路传输
The concert by Lang Lang was so well ______ that all the tickets had been sold out on the first three days last month.
A.received
B.recognized
C.admitted
D.taken
通常超声测量子宫纵径的方法正确的是()。
A.宫底浆膜层到宫颈内口的距离
B.子宫内膜线的长度
C.宫底浆膜层到宫颈外口的距离
D.子宫最长径
E.宫底黏膜层到宫内口的距离