Questionnaire for school project engineers on Purifier

[simrich]

Hello, a group of friends and I are in the final year of the engineering cycle at the National Higher School of Energy, Water and the Environment (ENSE3-Grenoble INP), and we have to carry out a project on the atmospheric pollution. For this, we must carry out a survey on a large panel of people. I would therefore be very grateful if a maximum of you could give us 5 short minutes of your time in order to answer this questionnaire.

questionnaire link: https://docs.google.com/forms/d/1xFPtYJ ... rmResponse

Thank you in advance.