《钢轨伤损编码》第一层数字代表伤损种类。
参考答案：错
Li Hua has been elected ________ monitor of our class to take ________ place of Ma Li.
A．the；不填
B．the；the
C．不填；the
D．不填；不填
液晶或有机发光二极管（OLED)显
