The state of Virginia checks all restaurants to make sure the conditions are sanitary. This is an example of which of the following?

Disadvantages of standard O2 masks include which of the following? 1. Being difficult to apply to patients. 2. Patient discomfort (straps and heat). 3. Increasing the risk of aspiration

4. Must be removed for eating. a. 1 and 3 only b. 1, 2, and 3 only c. 3 and 4 only d. 2, 3, and 4 only

Therapeutic radioisotopes are characterized by

a. very short half-lives. b. half-lives that are exactly the same. c. relatively long half-lives. d. half-lives that remain constant for all eternity.