单项选择题
早、午、晚三餐的热能分配比例分别为()
A.20%,30%,50%
B.30%,40%,30%
C.30%,30%,40%
D.25%,50%,25%
E.30%,50%,20%
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单项选择题

单项选择题
A.20%,30%,50%
B.30%,40%,30%
C.30%,30%,40%
D.25%,50%,25%
E.30%,50%,20%
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