</span><br /><span style="font-family: Cambria;letter-spacing: 0;font-size: 16px"> </span><br /><span style="font-family: Cambria;letter-spacing: 0;font-size: 16px"> <span style="font-family:Cambria">维生素</span>C负荷实验是在受试者口服维生素C后收集（）h内的尿做测定。</span>-健康e宣导