Safety strap should be placed __________________

You respond to a boat dock for a diving injury. You find a 24-year-old male patient unresponsive with frothy blood in the mouth and lung sounds absent on the right side. The patient is breathing 28 times a minute. The patient's friends state they were diving when he unexpectedly came out of the water complaining of chest pains and then collapsed. What is your first action?

A) Place the patient on high-concentration oxygen by bag-valve mask. B) Place the patient on high-concentration oxygen by nonrebreather mask. C) Suction the airway. D) Insert an oropharyngeal airway.

Flammability limits ______________ for different fuels.

A) vary widely B) are the same C) do not pose a fire concern D) decrease when heated