aerodynamics aeronautics aerospaceengineering applied astronautics biochemical career ce30 ce80 cg10 ch30 ch94 chemical chemicalengineering chemistry earthsciences engineering fluids general industrial industrialtechnology ma24 mathematics mathematicsgeneral me20 me40 me70 mechanical mez0 ph30 ph50 ph80 phe0 physical physics professional statistics technical technology thermodynamics trade trades