One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； October 06
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Single-choice question: The conversion of vinyl chloride via the calcium carbide method involves washing processes that are essentially different from each other; washing with water involves absorption by (), while washing with alkali involves absorption by (). A. Chemical absorption ； Physical absorption B, Physical absorption ； Chemical absorption C, Physical absorption ； Physical absorption D, Chemical absorption ； Chemical absorption Answer: B, Physical absorption ； Chemical absorption
B. Physical absorption； Chemical absorption
B. Physical absorption； Chemical absorption