What is 'liquid surge' in a tanker vehicle, and what is its primary danger?
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A
The movement of liquid load that can push the truck in the direction the liquid is moving, causing loss of control
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B
Air pockets that form in a partially filled tank, reducing effective braking pressure
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C
Overflow of liquid through pressure relief vents during hard cornering
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D
Cavitation in the tank pump that damages the internal baffles over time