[填空题]
In a hot day’s race, a bicyclist consumeq7 bau)yqxh:*rq,h m-j- tl i+s 8.0 L of water over the sa+ y -t2oa ;cv,tnq3adpan of four hours. Making the approximation that all of the cyclist’s energy goes into evata dan, ovt-+c2 3yq;aporating this water as sweat, how much energy in kcal did the rider use during the ride? (Since the efficiency of the rider is only about 20%, most of the energy consumed does go to heat, so our approximation is not far off.) kcal
