An apparatus for sterilizing andor disinfecting water in a water dispenser. The invention also provides expression vectors, host cells, antibodies, agonists, and antagonists. The weld blanket is lightweight and is successful at a cost-effective thickness and density. The computing device automatically assign, using the test version assignment criteria, subsets of test questions, which differ from each other by at least one question, to different test participants. This is achieved in particular owing to the fact that the redundantly stored data are accessed in accordance with parameters of data transmissions between the computer units and the data storage devices and that, in accordance with said data transmission parameters, the redundantly stored data are moved to and from the data storage devices by corresponding copy and delete operations. A seat tube extends between the upper frame member and the lower frame member.