【Daily Question】 2016 04 23 Hydrogenation Sector Multiple-choice Question

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This post was last edited by zls1457 on 2016-4-23 at 13:25. [Daily Question] 2016-04-23: Hydrogenation sector – Multiple-choice question. Nitrogen purging must be carried out before starting up the system in order to remove (　) from it. A. Hydrocarbons B. Hydrogen sulfide C. Water D. Air. Promotion of petrochemical activities: Notice on the launch of the “I’m saving energy, where are you?” event in the petrochemical area: http://bbs.hcbbs.com/thread-1579199-1-1.html. This event offers awards in both written and photographic categories. When there are over 200 entries, an additional grand prize will be awarded; the value of this prize is 600 Haichuan coins. If there are more than 300 entries, the grand prize value increases to 1,000 Haichuan coins, and if there are 500 entries, it rises to 1,500 Haichuan coins. First prize: 3 Haichuan commemorative water cups. Second prize: 5 winners, each receiving 120 Haichuan coins. Honorable mentions: several winners, each receiving 200 Haichuan coins. 1. Information on contests with prizes for specific topics: http://bbs.hcbbs.com/thread-1568416-1-1.html (Source: Haichuan Chemical Industry Forum). 2. [Petrochemical Weekly] Issue No. 9, dated 2016-3-12 (Summary of recent petrochemical activities): http://bbs.hcbbs.com/thread-1568615-1-1.html (Source: Haichuan Chemical Industry Forum). 3. “Haichuan Gratitude Season” – Summary of events in the Petrochemical Section: http://bbs.hcbbs.com/thread-1533218-1-1.html (Source: Haichuan Chemical Industry Forum). 4. Summary of professional “basic knowledge” posts in the Petrochemical Section (Supported by the main forum; amazing prizes await you): http://bbs.hcbbs.com/thread-1557057-1-1.html (Source: Haichuan Chemical Industry Forum). There are surprises waiting for those who reply to this post – money will be given as a reward. http://bbs.hcbbs.com/thread-1580356-1-1.html