Dust is the biggest problem for humans to set up bases on Mars and the Moon. Dust particles not only reduce the sensitivity of the detector, but also cause wear on the spacesuit. Recently, researchers have found that the vibration effect of using stereo speakers can eliminate surface dust, thereby Solve this headache. Which of the following, if true, would most undermine the addiction? ['The speaker can release noise of different audio frequencies. Only the audio frequency is high enough to form a strong pressure to remove the dust attached to the instruments and equipment.', 'Sound is a pressure wave propagating in the air. Previous experiments were simulated experiments on the earth and are not suitable for space.', 'The temperature difference between day and night on the surface of the moon is very large, which can reach hundreds of degrees Celsius. The speaker needs to be made of special materials to work properly.', 'The air on Mars is thin, sand particles are suspended, and dust storms often occur. This requires continuous speaker operation to ensure dust removal.']