移频自动闭塞中继点的接收盒不控制通过信号机的显示，接收盒的UJ、LJ可用1个（）继电器代替。
参考答案：绿黄
用于监控非智能设备的模块是（）。
A.CMU
B.EMU
C.PCU
D.BMU
No one appreciated his work during his lifetime, but________it is clear that he was a great artist.
A．in the aftermath
B．by the time
C．in retrospect
D．in this eventuality
