The present invention has disclosed a use of N-acetyl-D-glucosamine in the manufacture of a medicament for preventing and treating motion sickness, the preparation in which N-acetyl-D-glucosamine is taken as a main active component is able to be used for preventing and treating motion sickness with an effective rate up to more than 90%. Each of the plurality of fiber holes is configured to receive one of the at least one fiber and each fiber is selectively inserted within one of the plurality of fiber holes at a selected position among the plurality of fiber holes. The method determines a first security level associated with the first network and identifies a plurality of networks associated with the called party using the identifier. The zones are defined as start-up zones, shutdown zones and load change zones. The front edges 9 of teeth 4 are curved such that it does not go below the baseline of base member 1, and thus do not interfere with or damage the substrate. Additional components or group of components for use with the beverage holder.