《铁路设备大修规则》规定:相邻地段代数差()时,须设圆曲线型竖曲线。
参考答案:大于3‰
The film star has asked________but the journalists just keep following him wherever he goes.[ ]
A.to leave alone
B.left alone
C.to be left alone
D.being left alone
目前投产使用的堆取料机,其悬臂胶带型号为()
A、TD65,TD75
B、TD75,TD62
C、TD62,TD65