Community QuestionSeen on 5 CBTs

Which of the following three hazard classes should NOT be placed into a temperature-controlled trailer (one with a heater/air conditioner unit)? 1) Classes 1, 4, and 5.1 2) Classes 1, 3, and 6 3) Classes 1, 2.1, and 3 4) Classes 1, 3, and 4

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Answer

Classes 1, 2.1, and 3