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English Translations » 炼制(催化焦化深加工) » Practice questions on June 2, 2017; replies will earn 0–6 po

Practice questions on June 2, 2017; replies will earn 0–6 points (no scoring for replies sent more than 1 day after posting). Thank you for your replies

2017-06-02View Original

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Multiple-choice question (no points will be given for incorrect answers or incomplete responses). In the classification of key components in crude oil, the two key components refer to (A, B). A. Fraction at 250-275°C B. Fraction at 395-425°C C. Fraction at 250-280°C D. Fraction at 395-430°C. No scoring for replies given within 1 day of posting; thanks for your reply
Reply #22017-06-02
A. Fraction at 250-275°C B. Fraction at 395-425°C
Reply #32017-06-02
A. Fraction at 250-275°C B. Fraction at 395-425°C

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Translated at 2026-07-21 05:07:23

Original: https://bbs.hcbbs.com/thread-1784879-1-1.html

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