单选:临床实验室测定血清总钙的常规方法是()

题目内容:
临床实验室测定血清总钙的常规方法是()
A.原子吸收分光光度法
B.火焰光度法
C.离子选择电极法
D.分光光度法
E.荧光法
参考答案:【答案仅供学习,请勿对照自行用药等】

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