The parking or emergency brakes on a heavy vehicle can only be held in place by something that cannot leak away, such as:
A. Spring Pressure
B. Air Pressure
C. Hydraulic Pressure
Answer: A. Spring Pressure
A. Spring Pressure
B. Air Pressure
C. Hydraulic Pressure
Answer: A. Spring Pressure
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.