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Pressure vessels must be inspected regularly, which are divided into ____________, ______________, and ___________. Fill-in-the-blank questions: Answer: External inspection, Internal inspection, Comprehensive inspection. http://down.hcbbs.cc/attachment/forum/201706/10/203353z7y06fdo70r6eod0.jpg The Petrochemical Sector – New Ideas for Energy Saving: The “Creative Thinking” Campaign (the second phase is currently in progress). http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1666758 (Source: Haichuan Chemical Industry Forum) 2017: “My Technical Upgrades” in the Coal Chemical Industry. http://bbs.hcbbs.com/thread-1786290-1-1.html (Source: Haichuan Chemical Industry Forum Website)
Pressure vessels must be inspected regularly, which includes _external inspection___________, __internal and external inspection____________, and ____pressure test_______.
External inspection, internal and external inspection, and pressure test
External inspection, internal inspection, comprehensive inspection
External inspection, internal and external inspection, voltage withstand test
External inspection, internal and external inspection, and pressure test
External inspection; internal and external inspection; voltage resistance test
Annual inspection, comprehensive inspection; voltage withstand test
External inspection, internal and external inspection, and pressure test