One Question per Day on Refining Knowledge (Technology) 1103015

Thread Content

We welcome everyone to actively participate in the learning and discussion of professional basic knowledge in the refining technology exchange area! In accordance with the forum’s uniform requirements, the maximum score for this activity is 5 Wealth points, and rating charm is prohibited. Friendship requests and duplicate ratings are also declined. Be careful when posting; 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 focus is on participation, and there are prizes for it. Please hide your replies; those that are not hidden will be deleted. Multiple-choice question 1: The appropriate reflux ratio is the ( ) of the reflux ratio. A1.0～2.0 B0.5～2.5 C1.5～2.5 D 1.1～2.0 2. The unit operation of distillation mainly belongs to the transfer process of （ ）。 A Heat B Momentum C Energy D Mass 3. Which of the following emergency treatment methods for poisoning is incorrect? A. In the case of acute toxic poisoning of the respiratory system, it is necessary to remove the poisoned person from the area and expose them to fresh air, or provide anti-toxin treatment. B. In the event of H2S poisoning, gastric lavage should be performed immediately to induce vomiting. C. If a person swallows a solution of heavy metal salts, gastric lavage should be carried out right away to induce vomiting. D. When the skin, eyes, or nose are exposed to toxic substances, they should be rinsed immediately with plenty of tap water. 4. After a chlorine leak, the best way to deal with chlorine in the air is to add ( ) to the air. A. Spraying water B. Spraying lime water C. Spraying NaCl solution D. Spraying NaOH solution 5. The two bases referred to in the so-called \"three acids and two bases\" in industry usually are ( ). A. Sodium hydroxide and potassium hydroxide B. Sodium carbonate and sodium bicarbonate C. Sodium hydroxide and sodium bicarbonate D. Sodium hydroxide and sodium carbonate Answer: DDBBD