Petroleum refining knowledge (technology): Question of the day 110216

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Everyone is welcome to actively participate in the learning and discussion of fundamental professional knowledge in the Refining and Processing Technology Exchange Area! In accordance with the forum’s unified requirements, the maximum score for this event is 5 Wealth points; scoring for Charm is prohibited. At the same time, friendship and duplicate ratings are declined. Post with caution; editing is ineffective. Those who have different opinions on the provided answer keys can post discussions the next day; those who provide solutions or their own opinions regarding the answer key for the daily question will receive appropriate rewards! The important thing is to participate; there are rewards for participation. 1. For a mixture of gases in a given container, the partial pressure of each component can be calculated using ___. A. Newton’s laws B. Raoult’s law C. Dalton’s law of partial pressures 2. As the wax content in oil increases, the freezing point of the oil ＿＿. A. Decrease B. Remain unchanged C. Increase 3. The feed temperature in a constant-pressure tower is generally ( ). A. 210–250°C B. 360–370°C C. 350–500°C 4. A stripping tower belongs to ( ). A. An incomplete tower with only a distillation section B. An incomplete tower with only a stripping section C. A complete tower with both a distillation section and a stripping section 5. When the vaporization rate is 0 < e < 1, it indicates that the feed state is ( ). A. Saturated liquid phase feed B. Partially vaporized two-phase feed C. Superheated steam feed Reference answer: C ； C ； B ； B ； B