One Question per Day on Synthetic Ammonia (Series 10)

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I. Multiple-choice questions (each question has 4 options, of which only 1 is correct; fill in the correct option in the brackets). Series 9, Question 46: (A-B-008) How many types of keys are commonly used in general machinery? (A) 2 (B) 3 (C) 4 (D) 5 47. (A-B-008) Key 18×100GB1096-79 represents a round-head ordinary flat key ( ). (A) Width 18, length 100 (B) Length 18, width 100 (C) Height 18, width 100 (D) Height 18, length 100 48. (A-B-008) Thread specification d: M12, nominal length 80 mm, Grade A; hex head bolts are designated as bolts GB5783-( ). (A) 86-M12×80 (B) M12×80-86 (C) 86-M12-80 (D) 80-86-M12 49. (A-C-001) Quality management uses the ( ) cycle. (A) PDCA (B) PCDA (C) PADC (D) PACD 50. (A-C-001) The quality responsibility system includes ( ). (A) Leadership responsibility system (B) Functional department responsibility system (C) Team responsibility system (D) A, B, and C. Answer: A. A A A D. 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 methods to hide posts, see: http://bbs.hcbbs.com/thread-1551107-1-1.html