The electricity can be got from( ),( )or an on-board energy storage device
A: the line
B: the overhead line
C: a third rail
D: the cable
A: the line
B: the overhead line
C: a third rail
D: the cable
举一反三
- ( ) is a device for energy storage and release in the hydraulic transmission system.
- The high-speed train runs exclusively on a(n) _____________. A: dedicated line B: existing line C: special track D: continuous welded rail
- ______is a device attached to a rail to prevent it from creeping in the direction of train travel. A: flat bottom rail B: ullhead rail C: ail ancho D: aseplate
- In the third line, the word boom could best be replaced by .
- In addition to acting and line, from what other aspects can we comment on a movie ( ) 答