Please capitalize where necessary: this increases productivity and raises efficiency.
A: This increases productivity and raises efficiency.

Please capitalize where necessary: the 54 days represent six novenas (which, of course, consist of nine days each).
A: The 54 days represent six novenas (which, of course, consist of nine days each).

Please capitalize where necessary: don't go too near the fire, said the prince, or your hands and face will be frost-bitten.
A: Don't go too near the fire, said the prince, or your hands and face will be frost-bitten.

Please capitalize where necessary: threshold relays and displays with analogue input show the actual values according to the preset physical units.
A:
Threshold relays and displays with analogue input show the actual values according to the preset physical units.