Winston cannot taste the wine he is offered, because of all the gin he had drunk throughout his life. what is the rhetorical effect of this?

The rhetorical effect that winston cannot take the wine he is offered, because of all the gin he had drunk throughout his life is that, It is ironic because later the party actually makes Winston and Julia believe what they want. We will say that the rhetorical effect of this is IRONIC. 

Ten percent of energy is transferred from sun to the level indicated.