[Phase 1 of Time-Limited Quick Response Contest] 037 [Completed]

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Rules: 1. If you want to answer immediately, give a score of +1 wealth to floor 1 and write your answer in the “Reason for action” field (only the content within parentheses); see the diagram below for details. 2. One “*” represents 1 Chinese character (or 1 digit), and the answer must match exactly to be considered correct. 3. The first person to answer correctly will receive +10 wealth points; please reply in the comments on floor 2 or below to claim the reward ； 4. The scope of questions covers the commonly used standards and experience manuals in the fields of process engineering and piping ； 5. The difficulty level of the questions increases from easy to difficult. 6. Lower-grade students are welcome to participate actively. Question of this issue: 037. Isolation valves should be installed at the inlet and outlet points of the pipeline. For pipelines carrying flammable, explosive, corrosive, or toxic media, (****) should also be installed on the device side of the isolation valve. And consider adding (****). Standard answer: 8-character blind plate ； Operation Platform Winner: *exz Last edited by hutom123 on 2009-3-25 08:45 ]