IMSI国际移动用户识别码不提供（）信息。
A、MCC移动国家码
B、MNC移动网络号码
C、MSIN移动用户识别号码
D、FAC厂家编码
参考答案：D
书包背带都做得很宽，这是利用增大______来减小______；菜刀用钝了，磨几下后切菜就快了，是利用减小______来增大______．
Peter __________ under the pressure of his position and was unable to work for a year.[ ]
A．settled down
B．broke down
C．passed away
D．broke out
