2 people were making fun of me about a boy I like, And I can't scare them away!

Help me!

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

You are travelling on a long non-stop flight from tahiti to tampa. you have been in the air for about 7 hours and have not moved, since you boarded the plane at tahiti. you need to use the rest room and on standing up feel dizzy. the best explanation for your dizziness

(i think the answer is a, am i right? ) most regulatory signs are a. octagonal and red or white b. circular and blue or green c. rectangular and red or white d. rectangular and yellow