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when toggle format what by license comment
Jul 20, 2017 at 4:13 comment added Udit Sarkar I may want to pull the inverted U out of the water with the valves closed, I would need the valve B for that. In that case in which order should I open the valves ? First A then B ?
Jul 20, 2017 at 4:06 vote accept Udit Sarkar
Jul 19, 2017 at 20:51 history answered JEB CC BY-SA 3.0