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The correct pH value of boiler water is achieved by continuous addition of a suitable （） to the feed.
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The correct pH value of boiler water is achieved by continuous addition of a suitable （） to the feed.
A、acid
B、alkali
C、salt
D、None of the above
时间：2021-12-31 18:43
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船舶辅助机械
答案解析
B
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The correct pH value of boiler water is achieved by continuous addition of a suitable （） to the feed.
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