A(n) ________________________________ is an agent that damages exposed skin, frequently causing vesicles (blisters)

Which of the following is false with regard to simplex mode?

a. when one party transmits, the other must wait to reply b. you must push a button to talk c. it is called a "pair of frequencies" d. radio transmissions can occur in either direction, but not simultaneously in both

As exposure amplitude increases,

a. section thickness increases. b. tomographic amplitude decreases. c. slice thickness decreases. d. the exposure angle decreases.