Practice question

What is the first coupling step when building a typical set of doubles from a tractor?

  1. Build a typical set of doubles by coupling the tractor to the lead semitrailer first.
  2. coupling the rear trailer to the tractor first
  3. opening all shut-off valves first
  4. raising all landing gear first

Answer: A — Build a typical set of doubles by coupling the tractor to the lead semitrailer first.

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