【Daily Question】May 6, 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 financial rewards to users. 【Daily Question】 (Single-choice question) Which of the following situations that occur during the measurement process does not constitute an operational error? ( ) A. Weighing an object before it has cooled to room temperature. B. Rinsing the conical flask with the solution to be tested before titration. C. The weights used for weighing not being calibrated. D. Failing to rinse the pipette with the solution before using it to transfer the solution. Correct answer: C. Post your answer in the replies; participating in this question earns you +2 points, while getting all answers correct adds another +3 to +8 points. Those who provide a thorough analysis and explanation of the question or answers (or include detailed calculation processes) will receive additional points as a reward. 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.