问题
问答题 简答题
什么是定位装置?
答案
参考答案:
为了使电力机车受电弓滑板在运行中与接触网始终良好地接触取流,需要将接触网按受电弓运行要求进行定位,这种确定接触线平面位置的装置,称为定位装置。
什么是定位装置?
参考答案:
为了使电力机车受电弓滑板在运行中与接触网始终良好地接触取流,需要将接触网按受电弓运行要求进行定位,这种确定接触线平面位置的装置,称为定位装置。
阅读下面对话,从方框内7个选项中选择5个恰当的选项完成此对话,使其意思完整。
B: 小题1:_ A: What did you do there? B: I found out that the factory was pouring waste water into the river near it. 小题2:_. Lots of fish have died. A: 小题3: _. B: Do you think “Greener China” can do something? A: 小题4:_ . We can write a story about it to the TV station and the newspaper. B: 小题5: _ . Businessmen are afraid of newspapers and TV stations. |