Which of the listed types steam traps operates on the principle that hot water flashes to steam when its vapor pressure is rapidly reduced?（）<br>A:Ball float<br>B:Thermostatic<br>C:Bimetallic<br>D:Impulse

Which of the listed types steam traps operates on the principle that hot water flashes to steam when its vapor pressure is rapidly reduced?（）
A:Ball float
B:Thermostatic
C:Bimetallic
D:Impulse

出自：海船船员证

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