The principle of the () humidifier is that the high-intensity infrared lamp causes the water surface to release water vapor and diffuse into the air stream that needs to be humidified.

The principle of the () humidifier is that the high-intensity infrared lamp causes the water surface to release water vapor and diffuse into the air stream that needs to be humidified.
A . Electrode
B . Wet film
C . High pressure fogging
D . Infrared

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Answer: D