1.(判断题,2.0分)-|||-设S为光滑曲面,正侧法向量为(cosα,cos β,cosUND)P(x,y,z),Q(x,y,z),R(x,y,z)在S上连续,则-|||-(int )_(5)^p(x,y,z)dydz+q(x,y,z)dudx+R(x,y,z)dxdy=-|||-(int )_(5)^x(P((x)_(1)(y)_(1))_(2)cos 2x+varphi (x,y,z)cos B+R(x,y,z)cos y-|||-A 对-|||-B 错