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Free Doubles & Triples Test

Doubles & Triples Question #1 of 11

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Why should you pull a dolly out from under a trailer before you disconnect it from the lead trailer?

To keep the tires from blowing up
You can if you want to, it does not matter
The dolly tow bar may fly up, possibly causing injury, and making it very difficult to re-couple.
The dolly tow bar may fly away, possibly causing panic, and making it very difficult to re-capture it.

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