One Question per Day on Synthetic Ammonia (Series 4)

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This post was last edited by 654262293 on 2016-2-10 at 18:28. I. Multiple-choice questions (each question has 4 options, of which only 1 is correct; fill in the correct option in the brackets). Continuing from Series 3: 16. The liquid level in the ammonia cooler should be maintained at ( ). (A) 30%–50% (B) 100% (C) 80% (D) 0 17. In small-scale ammonia synthesis plants that use natural gas as a raw material, heat control in ( ) is achieved by adjusting the flow rate of the heat carrier. (A) E-6 (B) H-2 (C) H-1 (D) D-2 h 18. In the three-element control of a boiler, ( ) is the primary element. (A) Water level (B) Steam (C) Water supply volume (D) Pressure. 19. The pressure inside a certain container is 1.0 MPa; the indicated range of its gauge should be ( ) MPa. (A) 0～1 (B) 0～1.6 (C) 0～2.5 (D) 0～4.0 20. Turbine flow transmitters should be installed ( ). (A) Horizontal (B) Vertical (C) 45° angle (D) 135° angle. Answer: A, A, A, C, A. The above questions are taken from “Advanced Questions for Ammonia Synthesis Operators”; the scoring starts at 3 points, with 1 point added for each correct answer. It should be specifically noted that respondents are required to hide their answers. If the answerer’s score is not hidden, it is halved. For instructions on how to hide posts, see: http://bbs.hcbbs.com/thread-1551107-1-1.html. Tomorrow is Chinese New Year, and there might be a lot of things to deal with; I’ll leave early on the 30th, from the Pulverized Coal Pressurized Gasification Team