[单选题]
98.22: A rotating fan bly7 e ;;zjmy2hiwpeclj,b 0.d2ade has kinetic energy 0dmz1ywu /wh) b23brk8 dug) tK when rotating with constant angular velocity. When the angular velocity is reduced to one-third, the kinetic ener)8d32m u uyw w dgt)bbrzh1/0kgy becomes