当采用BSC代理NNSF算法实现时，BSC应能够支持从初始非接入层消息中获得用户标识，包括TMSI、（）、IMEI。
参考答案：IMSI
We were very much surprised at the way ___ she treated the old woman.
A．on which
B．by which
C．to which
D．in which
系统学
