Practice question

A bulk tank of flammable liquid is unloaded but not cleaned or purged. What is usually true?

  1. Placards must be removed immediately
  2. Placards and markings may still be required because residue or vapor remains
  3. It changes to passenger placards
  4. Food-grade labels replace placards

Answer: B — Placards and markings may still be required because residue or vapor remains

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