【Daily Question】【Static Equipment AC Version...Question 197】July 16, 2019 Multiple-choice...Fill-in-the-blank

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bk07.jpg【Daily Question】【AC Version for Static Equipment...Question 197】July 16, 2019 Multiple-choice questions...Fill-in-the-blank questions...........................................................................Reward rules: 3 Wealth points for participation, 10 Wealth points for correct answers. No score will be given after two days. ...........................................................................When the shell has a circular opening, the diameter of the opening refers to the inner diameter of the pipe plus ( ) times the thickness ( ). When openings are made in an elliptical head in the transition zone, the calculated thickness of the shell used in determining the required reinforcement area A refers to the ( ) thickness of the elliptical head. ...........................................................................Answer: 2 ； Additional amount ； Calculate.