Oxygen corrosion in auxiliary boilers is prevented by treating the boiler feed tank with either sodium （）<br>A:sulfite or hydrazine<br>B:sulfite or hygroscopic sulfite<br>C:bromide or hydrazine<br>D:bromide or hygroscopic sulfite

Oxygen corrosion in auxiliary boilers is prevented by treating the boiler feed tank with either sodium （）
A:sulfite or hydrazine
B:sulfite or hygroscopic sulfite
C:bromide or hydrazine
D:bromide or hygroscopic sulfite

出自：海船船员证

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