MIST is caused by（）.<br>A:forest fires<br>B:smoke from industrial areas<br>C:dust or sand storms<br>D:water droplets with the relative humidity more than 95%

MIST is caused by（）.
A:forest fires
B:smoke from industrial areas
C:dust or sand storms
D:water droplets with the relative humidity more than 95%

出自：海船船员证

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