One code modification allows the elimination of the fire-resistance rating for roof construction located more than ___ feet

The senior EMT on the first vehicle that arrived on a scene with multiple patients should assume which of the following roles until relieved by a senior official?

A) Incident Commander of the scene B) Triage sector supervisor C) Commander of the entire incident D) Transport sector supervisor

Most carbon dioxide from cellular metabolism reaches the alveoli by being transported:

A) bound to hemoglobin. B) as bicarbonate ion. C) dissolved in plasma. D) as carbonic anhydrase.