【Daily Question No. 7】March 4, 2017
Thread Content
A wind-operated valve means it ( ) when there is wind, and it ( ) when there is no wind. Fill-in-the-blank questions: Correct answers are **“on” and “off”**. One question per day. Reward rule: 5 wealth points as a participation prize ； 10 Wealth for correct answer ； Petrochemical Deep Processing Zone [One Question per Day] Compilation Thread – Updated daily by the moderator: http://bbs.hcbbs.com/thread-1496481-1-1.html Petrochemical Zone – “Creative Ideas for Energy Saving” campaign: http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones available for grabs. Compilation thread for chemical technology materials in the “Petrochemicals Section”: http://bbs.hcbbs.com/thread-1654603-1-1.html Many prizes waiting for you
A wind-operated valve means it opens when there is wind and closes when there is no wind