A television capable of reporting a history of operation by an operator of an appliance is provided. The first binder is soluble in organic solvent and second binder is insoluble in organic solvent during the process of slurry preparation. The phase filter changes the phase of a wave front distribution in the BFP in a known manner. The second body is located between the first plate and the second plate for clamping a reversible cable with the first body. A method for making a ball-nut assembly positions the crossover member from outside the ball nut to have the flange supported by the ledge and the crossover-grooved portion located in the through slot. The present invention is directed to a process for producing easily polymerizable substance, which comprises mixing easily polymerizable substances obtained in plural reactors in advance, and supplying the mixture to a purification apparatus.