架空线路发生故障一般应在（）小时内处理完毕，恢复正常运行方式。
A、12
B、13
C、14
D、15
参考答案：A
We were all very much attracted by the beautiful scenery _____ we set foot in the village. [ ]
A. quickly
B. suddenly
C. finally
D. immediately
关于基本呼叫类故障定位时需要查看以下（）信令跟踪。
A.SLB跟踪及失败观察
B.SIP跟踪及失败观察
C.CCM和SIM跟踪及失败观察
D.SCM和RM跟踪及失败观察
E.H248跟踪及失败观察
