Which of the following statements is correct about the use of UV rays?
A. TV remote control
B. Proper UV exposure helps the body synthesize vitamin D
C. Anti-counterfeiting measures on banknotes
D. Night vision goggles on military installations
Answer:B
Which of the following statements is correct about the use of UV rays?
A. TV remote control B. Proper UV exposure helps the body synthesize vitamin D C. Anti-counterfeiting measures on banknotes D. Night vision goggles on military installations