[名词解释]
2_2s

尿液标本作L型菌培养时，培养基中加入20%蔗糖的原因是() ["A．提供高营养","B．使尿中蛋白质变性","C．稀释尿液","D．保持高渗环境","E．中和尿液的酸度"] 10 41s 持续改进平均值