Which type of aerial apparatus stabilizer deploys straight down from the underside of the apparatus?

You are watching an EMT prepare the ambulance for the upcoming shift. In regards to oxygen cylinders and equipment, which one of the following requires immediate intervention?

A) He ensures that the temperature in the oxygen storage room is under 100°F. B) He lays tanks on the floor when removed from the ambulance. C) He makes certain that all valves on the empty oxygen tanks are closed. D) He cleans a dirty oxygen tank with a petroleum-based agent.

When is the proper time to label a tube of blood?

a. At the bedside immediately before drawing b. At the bedside immediately after drawing c. At the nurses' station immediately after drawing d. Immediately on return to the laboratory