The principle of the ( ) humidifier is that the high infrared light makes the water surface release water vapor and diffuse into the airflow that needs to be humidified.

The principle of the ( ) humidifier is that the high infrared light makes the water surface release water vapor and diffuse into the airflow that needs to be humidified.
A . Electrodes
B . Humidity
C . High pressure spray
D . Infrared

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Answer: D