【Daily Question No. 024】2018.01.24

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【Daily Question No. 024】January 24, 2018: Which one does not belong to the four main types of safety signs? A. Prohibition sign B. Warning sign C. Stop sign D. Guidance sign. Due to the limitations on the number of posts in the “One Question per Day” section, the “One Image per Day” content has been moved to the registered devices section; you can access it through the directory I provide. For management purposes, if you need to view content from a few days ago, please access it through the summary post below. 2018 Chemical Engineering Technology Training – Daily Question Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888971
2018 Registered Equipment Section – Daily Image Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970
2018 Hydrogen Production and Hydrogenation Technology Section – Q&A Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888968
2018 LNG Technology Discussion Section – Daily Question Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888973
2017 Q&A Summary Thread (updates have started): https://bbs.hcbbs.com/thread-1657793-1-1.html
2017 Daily Question Summary Thread (updates have started): https://bbs.hcbbs.com/thread-1657794-1-1.html
2017 Daily Image Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1875160
2017 LNG Section – Daily Question List: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1804162
2016 Q&A Summary Thread (all updates completed): https://bbs.hcbbs.com/thread-1597792-1-1.html