Without friction, there could be no brake.
举一反三
- One is service brake and the other is parking brake．
- Service brake needs higher braking force than the emergency brake.
- Which of the following is NOT part of the vacuum brake system? A: Coupled hose. B: Dummy coupling. C: Brake pipe. D: Manual brake.
- 【多选题】空气制动可以用哪些英文表达 A. pneumatic brake B. air brake C. friction brake D. regenerative brake
- what is the purpose of the brake hoses in the brake system?（ ） A: they add friction B: they add flexibility C: they add air flow D: they add brake force