Mix-and-Match E-Learning Challenge Examples #457: Challenge | Recap
Challenge of the Week
This week, your challenge is to combine three or more e-learning challenge topics in a single ent...
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Very interesting. I never gave storage tanks a second thought. I didn't know they had floating roofs.
Hi Jodi, there are four basic types: floating roof, fixed roof, fix roof with floating roof inside and an open roof. Probably more than you ever wanted to know about storage tanks ;-)