【Daily Question】June 11, 2016 – Participate to earn +2 wealth； +3 to 8 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 offering rewards in the form of financial benefits to users. 【Daily Question】 (Single-choice question) If only the quantitative analysis of a specific component in a complex sample is required, which method is suitable when using chromatography? A. Normalization method B. Standard curve method C. External standard method D. Internal standard method. Correct answer: D. Reply with your answer in the comments; you will receive +2 points for participating in the quiz. An additional +3 to +8 points will be given if all answers are correct. Extra points will also be awarded for thorough analyses and explanations of the questions or answers, or for detailed calculation processes. 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.