【Daily Question No. 048】2017.08.24

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【Daily Question No. 048】2017.08.24 Which of the following phenomena indicate a loss of vacuum in the storage tank? () A. The storage tank continuously emits cold vapor. B. Frost forms on the storage tank. C. The storage tank swells. D. The pressure in the storage tank rises rapidly before returning to normal. Refer to the answer key; points will be awarded for identifying the key aspects. Summary thread of Q&A questions from 2017 in the US (updating now): http://bbs.hcbbs.com/thread-1657793-1-1.html Summary thread of daily questions from 2017 (updating now): http://bbs.hcbbs.com/thread-1657794-1-1.html Summary thread of Q&A questions from 2016 (already updated): http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical sector – “Creative Ideas for Energy Saving” campaign (the second phase is in full swing): http://bbs.hcbbs.com/thread-1666758-1-1.html “My Technical Upgrades” in the coal chemical industry for 2017: http://bbs.hcbbs.com/thread-1786290-1-1.html