发生光路中断故障时，查询哪些数据可以协助定位故障（）
A.相关设备告警
B.设备类型
C.光路路由
D.光路级别
参考答案：A, C
焊料焊中不包括
A．火焰钎焊
B．摩擦焊
C．电接触钎焊
D．高频钎焊
E．蓝浴钎焊
The students need to be able to read _______and thoughtfully instead of accepting whatever they
are taught passively.[ ]
A. actively
B. hopefully
C. energetically
D. effectively
