【Daily Question】August 5, 2017 – Participate to earn +2 wealth； +3 to +10 wealth for correct answers

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To increase the popularity of the chemical analysis section, a \"One Question per Day\" campaign has been launched to foster an active atmosphere for technical exchanges while also providing financial rewards to users. 【Daily Question】Multiple-choice question: Which of the following gas chromatography operating conditions are correct? ( ) A. The higher the vaporization temperature, the better. B. On the premise that the most difficult-to-separate compounds can be separated properly, a lower column temperature should be used as much as possible. C. When selecting the carrier gas flow rate in practice, it is generally set slightly below the optimal flow rate. D. The temperature of the detection chamber should be lower than the column temperature. Answer: BC. Reply with your answer in the comments; participating in the quiz earns you +2 points. Those who get all answers correct receive an additional +3 to +8 points. If you provide a thorough analysis and explanation of the questions or answers (or include detailed calculation processes), you will receive extra points as a bonus. If your answer is correct and your analysis is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions.