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Practice questions on April 18, 2017; replies will earn 2–6 points (no scoring after the answers are shown, thank you for your replies)

2017-04-18View Original

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Multiple-choice question: The reasons that affect the decrease in top-down accuracy are (A, D). A. Insufficient steam pressure is used in the steam ejector. B. The outlet temperature of the vacuum furnace is too low. C. Insufficient steam is supplied at the bottom of the tower. D. The liquid level at the bottom of the tower is too high

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