I got to choose 2 lessons from these 3 for optional courses. I'm studying mechanical engineering. Which ones are the most important in your opinion? Available options are: 1) Thermodynamics II 2) Material Science II 3) Technical drawing II with CAD software ( teaches Solidworks previous year we had Technical drawing I which tought about AutoCAD 2D sketches but I learned some 3D modelling out of courses in Autocad and and DesignModeler but cant claim that I can model complex thing. I'm much more like an amateur. Any help is appreciated.