想在瑞士找书价实习；建筑行业公司

You speak french or germany or just english?

If you just speak English, you have some difficult to communicate with people in Switzerland. Anyway, you can contact with some professors in civil engineering to see whether they accept you for one short period.
Good luck. I can give you one listing of professor name: http://enac.epfl.ch/page65244.html