单项选择题
A.蛋白质 B.脂肪 C.淀粉 D.矿物质
A.5~10 B.1~5 C.1~2 D.0.5~1
A.外壳 B.皮层 C.糊粉层 D.胚
A.2.8%~4.0% B.2.8%~3.8% C.1.8%~4.0% D.1.8%~3.5%
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