在七号信令中,下面哪些功能属于信令链路层?()
A.信号单元定界
B.消息路由
C.差错校验
D.差错校正
E.初始定位
F.信令链路差错率监视
参考答案:A, C, D, E, F
--- If I_______ one million dollars, I would give it to medical research.
---If I _______ you, I would give it to charity.
A.will have, am
B.would have, was
C.had, were
D.have, is
就给定资料所反映的主要问题,用1 200字左右的篇幅,自拟标题进行论述。要求中心明确,内容充实,论述深刻,有说服力。