7.22-Daily Topic (Pharmaceutical Engineering Technology Edition)

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7.22– Daily Topic (Pharmaceutical Engineering Edition): Those who answer correctly receive 10 wealth points, while those who answer incorrectly receive 3 wealth points. Multiple-choice question: Material balance calculations based on the time unit of “days” involve determining the daily production volume of a product by using its annual production volume and number of production days; then, the amount of material required for one day’s operation is calculated based on the overall yield of the product, and material balance calculations are carried out using this value as a basis. Under normal circumstances, the number of annual production days can be calculated as 【 】 days; in cases of mild or severe corrosion, this figure can be increased or decreased depending on the specific conditions. For processes that are not yet mature or suffer from severe corrosion, the calculation can be done on a 【 】-day basis. A、240 B、280 C、330 D、300c d