成人维生素B1和B2的需要量(mg)常以所需每1000kcal能量表示,均约为()A、500B、50C、5D、0.5E、0.05
成人维生素B1和B2的需要量(mg)常以所需每1000kcal能量表示,均约为()
- A、500
- B、50
- C、5
- D、0.5
- E、0.05
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