[填空题]
Estimate the rate at which hego xkcy-y.).xnl)v 7 zat can be conducted from e k6itcepwdh)y8l e2k,;+p;b qv/vss-t p-:i the interior of the body to the surface. Assume that the thicknesspt+ , b: dh6lt-sy )k ieppiekwvv28e ;c-;q/s of tissue is 4.0 cm, that the skin is at 34$^{\circ}C $ and the interior at 37$^{\circ}C $, and that the surface area is $1.5\,m^2$ Compare this to the measured value of about 230 W that must be dissipated by a person working lightly. This clearly shows the necessity of convective cooling by the blood. W
