某商店最近进了8桶酱油,1桶醋,桶是封着的,从外观上看,酱油桶和醋桶完全相同。店内有一架大型天平,请问最少称几次能把那桶醋找出来? lP9Ub/V063F187lyydA59GiIBnEVGzoFBk6FX4NwPgUaay4p2GFN01gwhN5/ws0V