<p> 已知T=273+17=290k,e/p=0.8%,T<sub>v</sub>=(1+0.378e/P)<br> T=(1+0.378×0.8%)×290=290.88(K)=17.88℃<br> 根据湿空气的状态方程,P=ρRdT(1+0.378e/P),P=1000hpa=100000Pa,Rd=287J/(kg•K)<br> ρ=P/[R<sub>d</sub>T(1+0.378e/P)]=100000/[287×290(1+0.378×0.8%)]=1.198(kg/m<sup>3</sup>)</p>