A desiccant-assisted air conditioning system utilizes a compressor, a condenser coil, an evaporator coil, supplemental desiccant coils connected therewith, and damper and valve arrangements that direct air and refrigerant through the system coils in several different thermodynamic operating paths. The drill bit has a shank and a full face crown that cooperate to define an interior space that receives water or other drilling fluid. 0 m, and a specific surface area below 6 m2g. And, once fetched, the members of the fetched and de-nested groups are fetched. The reference voltage generation circuit generates two reference voltages the values of which are different from each other, then provides the lower reference voltage to the gate electrode of the first field effect transistor, and then provides the higher reference voltage to the source electrode of the second field effect transistor.