One of the 3 elements of high-speed train is ______
A: speed up to 199km/h
B: need for a smaller curve radius
C: track made with continuous welded rail
D: speed up to 500km/h
A: speed up to 199km/h
B: need for a smaller curve radius
C: track made with continuous welded rail
D: speed up to 500km/h
举一反三
- Which of the following is not an element of high-speed rail? A: The need for a wider curve radius. B: Speed up to 199 km/h. C: Tracks made with continuous welded rails. D: The use of dedicated lines.
- Which of the following is NOT an element of high-speed rail? A: Speeds up to 199 km/h. B: The need for a wider curve radius. C: Tracks made with continuous welded rails. D: The use of dedicated lines or upgraded existing lines.
- High –speed rail is public transport by rail at speeds in excess of ________ km/h.
- ____is a train and rail system that reaches a high sustained rate of travel. Usually the speed is greater than 200 km/h.
- What's the highest speed of the Bejing to Shanghai high speed rail? A: 408km/h B: 315km/h