在IP业务量较大的城市，IP城域网骨干层将直接采用高速路由器为核心来组建。
参考答案：对
After retiring from her job. she has decided to _____ a language school _______ poor Migrant
workers' children.[ ]
A. set out; targeted
B. set about; targeted
C. set off; targeted
D. set up; targeting
一般在高线的精轧机组，冷却水压力为（），在粗轧机、中轧机冷却水压力为0.3～0.6MPa，并且冷却水嘴应靠近轧辊出口处。
A、0.3-0.6MPa
B、0.5-1.0MPa
C、3-5MPa
D、5-10MPa
