营养素具有构成和修补机体组织的生理功能。
参考答案:对
They will have time to cook dinner, but there aren't vegetables in
the fridge. [ ]
A. many ; a lot
B. much ; a lot
C. a lot of; many
D. a lot; much
室内质量控制的目的是为了保证每个患者样本检测结果的
A.可靠性B.稳定性C.准确性D.真阳性E.真阴性