HSPDA协议栈中,MAC-hS层主要实现()功能。
A.HARQ
B.AMC
C.多用户调度
D.流控
参考答案:A, B, C, D
You can’t go to the mall with John, he has got his driver’s license.
A.even though
B.because
C.so
D.if
干熄焦工艺采用的熄焦介质为()。