[单选题]测定某蛋白的含氮量为49,此样品中含蛋白质克数约为A.20gB.25gC.30gD.40gE.50g
[单选题]测定某蛋白的含氮量为89,此样品中含蛋白质克数约为A.209B.259C.309D.409E.509
[单选题]测定某蛋白的含氮量为4g,此样品中含蛋白质克数约为A.20gB.25gC.30gD.40gE.50g
[单选题]测定某蛋白的含氮量为4g,此样品中含蛋白质克数约为A.20gB.25gC.30gD.40gE.50g
[单选题]测定某蛋白的含氮量为4g,此样品中含蛋白质克数约为A.20gB.25gC.30gD.40gE.50g
[单选题]测定某蛋白的含氮量为8g,此样品中含蛋白质克数约为A.20gB.25gC.30gD.40gE.50g