To satify. As if to quench your thirst.
Most of the MRI scanners today use superconducting magnets that need liquid helium to keep them cold enough for proper function. A malfunction may, however, cause the helium to convert to gas and...
it means...that you mean what you mean:)
Dollars cents drachmas euros and rubles are all monetary units.
It could mean that you are nervous that you will disappoint someone you respect or care about.