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| For soft scale deposits on the inside of the tubes of a seawater-cooled shell-and-tube heat exchanger, what is typically the preferred method of cleaning? |
| A) Blowing out with compressed air or a steam lance. |
| B) Mechanical cleaning with specially designed brushes and/or flushing with hot freshwater. |
| C) Chemical cleaning with descaling compounds |
| D) Mechanical cleaning with specially designed reamers or cutting tools. |
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