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幼儿膳食计划应力求各营养素之间有合理的比值,其中蛋白质所提供的热能占总热量的()

单选题
2021-09-01 20:15
A、12%~15%
B、15%~20%
C、20%~30%
D、50%~60%
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正确答案
A

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