Questions on Knowledge (Technology) in Petrochemical and Natural Gas Chemical Engineering, April 11, 2010
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We welcome everyone to actively participate in the learning and discussion of professional basic knowledge in the petrochemical technology exchange area! At the same time, I hope other moderators will also participate in this activity, taking turns to come up with questions and discuss various sets of devices! Let’s work together to promote the development of the petrochemical technology exchange zone! The maximum score for this activity is 20 Wealth points. Friendly votes and repeated votes are not allowed; please be careful when posting, as such posts will not be counted as valid scores! To prevent the answers of some members from affecting others, members are asked to hide their own posts while answering questions. Thank you for your cooperation. For specific methods of concealment, see: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Multiple-choice questions: 1. The method generally used to prevent water hammer in steam pipelines is ( ) A. Improving insulation B. Strengthening the support structure C. Ensuring proper drainage of condensate 2. The principles for selecting a safety valve are ( ) A. Determining the nozzle area B. Identifying the suitable medium C. Determining the discharge capacity D. Determining the pipeline size 3. The more stages a compressor has, the more ( ) its surge range becomes. A. Wide B. Narrow C. Unaffected Answer: 1 AC 2 AC 3 B
1. The method generally used to prevent water hammer in steam pipelines is (AC). A. Improving insulation B. Strengthening the support structure C. Ensuring proper drainage of condensate. 2. The principles for selecting a safety valve are (AC). A. Determining the nozzle area B. Identifying the medium suitable for use C. Determining the discharge capacity D. Determining the pipeline size. 3. The more stages a compressor has, the (B) the surge range becomes. A. Wider B. Narrower C. Unaffected
1. The method generally used to prevent water hammer in steam pipelines is (C). A. Improving insulation B. Strengthening the support structure C. Ensuring proper drainage of condensate. 2. The principle for selecting a safety valve is (C). A. Determining the nozzle area B. Identifying the suitable medium C. Determining the discharge capacity D. Determining the pipeline size. 3. The more stages a compressor has, the (A) the surge range becomes. A. Wider B. Narrower C. Unaffected