Which of the following positions is described as lying face-down?

A Class A fire involves what types of materials?

A) Ordinary cellulosic materials such as wood and paper as well as similar natural and synthetic materials like rubber and plastics B) Flammable gases and flammable or combustible liquids C) Ordinary cellulosic materials such as wood and paper as well as similar natural and synthetic materials like rubber and plastics, which are energized by electrical circuits, wiring, motors, and other equipment D) Combustible metals

The normal arterial pH range in the human body is

(A) 7.0-7.15 (B) 7.15-7.35 (C) 7.35-7.45 (D) 7.45-7.80