单项选择题
A.50% B.60% C.70% D.80%
A.272KJ B.300KJ C.326KJ D.350KJ
A.100ug/d B.150ug/d C.200ug/d D.250ug/d
A.10mg/d B.15mg/d C.20mg/d D.25mg/d
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