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Multiple-choice questions on December 11, 2017; replies will earn 0–6 points (no scoring for replies sent more than 1 day after posting. Thank you for your replies)

2017-12-11View Original

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Cold reflux involves cooling a portion of the tower top product to ( ) temperature and returning it to the tower top, in order to control the tower top temperature, provide reflux within the tower, and ensure product quality. (Atmospheric and vacuum distillation unit) (1) Saturated liquid (2) Subcooled liquid Answer: ( )

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