Disclosed are improved polymer materials. In order to achieve the object, a gate electrode 109 of a p-channel MISFET is constituted of a titanium nitride film 106 and a tungsten film 107 formed on the film 106 and a gate electrode 110a of an n-channel MISFET is constituted of a titanium nitride film 106a and a tungsten film 107 formed on the film 106a. The blending process can be controlled to ensure that the vapor pressure of the blended gasoline meets vapor pressure requirements of environmental regulations. Subsequently, the computing device may transmit the validation token to a first key server different from the data storage server. Working surfaces of turbines are covered from heavy snow and during the storm and protected from birds.