请简述V3平台SMP单板的用途。
参考答案：
SMP:处理窄带、宽带3层以上信令，直到SCCP、RANAP层。
The traffic rule says young children under the age of four and_____less than 40 pounds must be in a
child safety seat.[ ]
A. being weighed
B. to weigh
C. weighed
D. weighing
“重法地”
