What term describes beer served from a keg rather than a bottle?

Besides USDA Standard, Select and Choice, what is the top USDA grade of beef? Which singer had his first No. 1 hit with "I'd Do Anything for Love (But I Won't Do That)" from the 1993 album "Bat Out… Which Beatles song includes the refrain "Beep beep, beep beep, yeah"? Which French scientist's 1860s method of gently heating wine to kill microbes now bears his name? Which autumn celebration, now a giant beer festival, began in 1810 to mark the wedding of Bavaria's Crown Prince Ludwig? Bees are found on every continent except which one? Bees gather which sweet flower secretion to make honey? Beethoven originally dedicated his "Eroica" Symphony to which leader?