For equipment to be safe, it must be ____ and maintained.

After a helicopter lands and continues to keep its rotor blades active, you should:

A) post a firefighter near the tail rotor to keep bystanders away. B) approach the aircraft from the front and keep the pilot in view at all times. C) slowly approach the left side of the aircraft while keeping your head down. D) not approach the aircraft until the pilot or a crew member signals you to do so.

Extracorporeal Therapies is defined as:

A) procedures in which equipment outside the body is used to assist/perform a physiological function. B) use of equipment outside the body for a therapeutic purpose that does not involve the assistance of a physiological function. C) a procedure that takes a single or series of readings of physiologic levels. D) a procedure in which a diagnostic or therapeutic substance is given to patient.