Should I learn fluid mechanics or thermodynamics

[dsf356]

I am graduate student from structural mechanics of solids and need to learn 1 course from fluids and thermal group which includes fluid mechanics or thermodynamics+heat transfer. I am unsure which one would be better to learn, especially which would be helpful in future for solid mechanics. Can you share your views? By the way, I will just learn 1 course, so please don't suggest to learn both.

 

[Nidum]

What sort of work do you plan to do in your future career ?