【Daily Question】 【AC Version for Static Equipment...Question 72】 March 13, 2019 – Revised multiple-choice questions...Everything is going well

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bg4.png【Daily Question】 【AC Version for Static Equipment...Question 72】 March 13, 2019 – Revised multiple-choice questions...Everything is going well...........................................................................The final voting stage for the 2018 “Top Ten Outstanding Members of Haichuan” has concluded — hope you’ll be nominated for this year’s list! Wishing all my friends by the seas and rivers: happiness every year, a harmonious family life, good fortune and success, smooth circumstances and good health, and prosperity throughout life! ........................................................................... Answers (multiple choice, multiple choice, multiple choice) please fill in in order. Reward rules: 1 wealth for participation, 3 wealth for each correct answer, up to a maximum of 10 wealth. ...........................................................................1. The microstructure of Q345R in the hot-rolled state is ferrite plus pearlite. ( )A、Correct ； B. Incorrect ； ---------------------2. For compression members for which the structural dimensions cannot be determined using GB150, GB150 permits design through stress analysis, verification experimental analysis, or comparative empirical design methods. （）A、Correct ； B. Incorrect ； ---------------------3. The circumferential stability safety factor for external pressure on cylinders as specified in GB150 is 3.0. ( ) A. Correct B. Incorrect --------------------- Answers: 1. A 2. A 3. A 1. Comment: This question tests designers’ comprehensive knowledge; it reminds them to have a thorough understanding of the microstructural characteristics of common materials. 2. Comments: The standards impose no restrictions on the structure; the design must meet the basic safety requirements of these standards, with the specific methods to be determined by the designer in accordance with 4.1.6 of GB150.1. 3. Comments: Interpretation of GB150. It assesses the designer’s understanding and mastery of basic knowledge and standards.