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.
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.
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.
- The less expensive option of constructing special tracks for high-speed train is utilizing __________ . A: dedicated lines B: existing lines C: specail lines D: continuous welded rails
- 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 long section of track without joints A: dedicated line B: curve radius C: continuous welded rail
- High –speed rail is public transport by rail at speeds in excess of ________ km/h.