One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； October 08

2016-10-08View Original

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Single-choice question: The shell-and-tube heat exchanger is the most widely used type of heat exchanger in chemical production at present. It is mainly composed of a shell, tube sheet, heat exchange tubes, head, baffle plates, etc. For shell-and-tube heat exchangers that have been in use for a long time, chemical and mechanical methods can be used to remove dirt from inside and outside the tubes; the purpose of doing this is ( ). A. Increase the heat transfer area B. Increase the heat transfer temperature difference C. Reduce the fouling thermal resistance D. Increase the fouling thermal resistance Answer: C. Reduce the fouling thermal resistance

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One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； October 08

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