常见的ONU设备中，具有所有功能的配置，删除配置的超级管理员权限的用户是telecomadmin。
参考答案：对
Until the noise of the bus ________, we were able to hear the program again. [ ]
A. died from
B. died out
C. died away
D. died off
施工过程中由偶然性因素引起的质量波动，一般属于( )。
A．系统波动
B．偶然波动
C．正常波动
D．突发波动
