Which step has the federal government taken in an effort to reduce second hand smoke exposure? A. banned employers from creating smoking sections in offices
B. banned smoking on beaches
C. banned smoking in restaurants
D. banned smoking on domestic airplane flights

Which of the following are considered general purposes of performing pulmonary function tests (pfts)? 1. the functional status of the lungs 2. the diffusion characteristics of the alveolar-capillary membrane 3. how much and how fast gas can be moved into and out of the lungs 4. the specific diagnosis of pulmonary disease