站内无空闲线路时，只准接入为排除故障、疏解车辆需要的救援列车、不挂车的单机和重型轨道车。
参考答案：对
Thirty soldiers were killed and many more were ______.
A．wounded
B．hurt
C．injured
D．damaged
铁芯中通过磁通就会发热，这是由于铁芯中有了交变磁通后产生的两种损耗：涡流损耗和磁滞损耗。
