System Parts第 24 / 60 题
What is the main advantage of air brakes over hydraulic brakes on large vehicles?
a.They never need any inspection
b.Air is free and the system keeps working even with a small leak by using stored air
c.They eliminate the need for a parking brake
d.They make the vehicle stop instantly
解析
Air brakes are a good way to stop large and heavy vehicles because air is readily available and the brakes use stored compressed air. A small leak will not immediately stop the brakes from working because the system keeps a supply of air. However, air brakes have more parts and take longer to react than hydraulic brakes.
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