PEG and related polymer derivatives having weak, hydrolytically unstable linkages near the reactive end of the polymer are provided for conjugation to drugs, including proteins, enzymes, small molecules, and others. The gaming device provides the player with a plurality of activations where an award is associated with each award symbol indicated in each activation. In the first operating mode, the driver predefines a desired driving torque via a selection element. A method for assembling the liquid pump includes axially pressing a bearing into a bearing holder. The dropping means 8 is located for the electric wire above the container.