Horizontal curves have cant, also called superelevation. Cant creates banked turns and neutralizes lateral stress on the tracks. This provides a smooth ride and allows trains to pass through curves at higher speeds. If the degree of cant is improper, trains can derail. [br][/br] Superelevation increases lateral stress.
错
举一反三
- isthe place where the track changes from straight to curved. A: transition B: lateral stress C: derail
- Occupational stress is also called work-related stress.
- is force exerted horizontally on the track as a train passes. A: lateral stress B: horizontal curve C: compromise figure
- Listen to a conversation between an inspector and a rail manager. Choose the correct answers. [音频] [br][/br] 1 What is the conversation mainly about A: The results of track improvements. B: Routine maintenance procedures. C: The cant of a particular curve. D: Where to place curves on a new line.
- There are different degrees of stress in English: primary stress, ( ) stress and weak stress. <br/>______
内容
- 0
I cant
- 1
as you can see in Brians case, an air-courier usually cant check any
- 2
中国大学MOOC: You cant check in if you dont have cash.
- 3
I cant finish the task
- 4
Stress is the foundation of rhythm. Stress can be classified into word stress and sentence stress.