Topics: Nail Enhancement Quiz
Most LED lamps cure gel about four times faster than UV lamps. What do the letters LED represent?
A. Light energy direction
B. Light emitting diodes
C. Light energy diodes
D. Luminescent energy diodes
Select your answer:
Topics:
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Body Systems › ViewHow many chambers does the heart have?
A. 4
B. 6
C. 2
Vision & Hearing › View
The part of your eye that dilates or contracts to control the amount of light let in is your
A. lens
B. pupil
C. iris
D. cornea