What advantages do stirred tank bioreactors have over shake flasks ?

Besides better aeration and mixing properties, what other advantages do stirred tank bioreactors have over shake flasks?

Stirred tank bioreactors have been designed for :

Draw sketch of simple stirred tank bioreactor.

Observe the sketch of stirred-tank bioreactor and label the parts A,B,C and D.

What advantage do the fuel cells have over primary and secondary batteries?

What are difference between flask and bioreactors