The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler （）<br>A:steam demand is high<br>B:salinity is high<br>C:safety valve simmers<br>D:burner flame is extinguished

The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler （）
A:steam demand is high
B:salinity is high
C:safety valve simmers
D:burner flame is extinguished

出自：海船船员证

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