扳道、信号人员在值班时应做到哪些？
参考答案：
扳道、信号人员在值班时应做到严格按照车站值班员的接发列车命令、调车作业计划，正确及时地准备进路。
总迹
They asked me so many _____ questions that I got _______ at last.
A．confusing, confusing
B．confused, confusing
C．confused, confused
D．confusing, confused
