Engine_2014 : Steam Plants - 235/1951
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| Carbon dioxide dissolved in boiler water is dangerous in a modern power boiler because the gas __________ . |
| A) forms carbonic acid which attacks the watersides |
| B) breaks the magnetic iron oxide film inside boiler tubes |
| C) combines with sulfates to cause severe waterside pitting |
| D) combines with oxygen to cause severe waterside scaling |
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