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bg4.png【Daily Question】【AC Version for Static Equipment...Question No. 105】April 15, 2019. Modified multiple-choice question...Everything is going well...........................................................................The question is taken from the standard NB/T 47041-2014 \"Tower-Type Vessels\". Please point out any inaccuracies in the modifications; if you have any good suggestions, feel free to leave a reply – rewards will be given generously. ........................................................................... 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. When the design temperature of the lower head of the tower shell is greater than or equal to ( ) °C, an air barrier should be installed above the skirt, near the head. Air barriers are divided into removable and non-removable types. A, 300 ; B, 350 ; C, 400 ; D, 450 ; ---------------------2. A support plate should be welded to the lead pipe or lead hole reinforcement pipe for support, and a gap should be reserved; when the () temperature is below -20°C, it is advisable to use (). The answer is ( ) A. Medium, wooden pad ; B. Environment, wooden pad ; C. Medium, asbestos gasket ; D. Environment, asbestos gasket ; ---------------------3. The outlet pipe at the bottom of the tower-type container should extend outside the skirt shell. ()A、Correct ; B. Incorrect ; ---------------------Answer: (Tests the structure of tower-type containers: air barrier ring, outlet hole) 1. C 2. A 3. A