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COGNITIVE ASSESSMENT Which of the following does a new federal laboratory use in its high security areas?
20/20 Vision
A term denoting normal visual acuity, meaning the clarity or sharpness of vision measured at a distance of 20 feet.
LEDs
Light Emitting Diodes, semiconductor devices that emit light when an electrical current passes through them.
Incandescent Lamps
Light bulbs that produce light through heating a filament until it glows, using electrical resistance.
Brake Lights
Safety lights located at the rear of a vehicle, which illuminate when the brake pedal is pressed to signal deceleration to following drivers.
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