A .2.5%-4.0%
B .3.0%-4.0%
C .3.1%-4.0%
D .3.2%-4.0%
[单选题]盖勃法测定牛乳脂肪含量时,乳脂计的读数方法是()。A .读取酸层和脂肪层的最高点B .读取酸层和脂肪层的最低点C .读取酸层和脂肪层最高和最低点的平均数D .以上均不正确
[单选题]盖勃法测牛乳脂肪含量时,水浴温度是()。A .约65℃B .约80℃C .约50℃D .约100℃
[单选题]盖勃法测定牛乳脂肪含量时,加异戊醇的作用是()。A .调节样品比重B .形成酪蛋白钙盐C .破坏有机物D .促进脂肪从水相中分离
[单选题]牛乳中脂肪含量约为( )。
[单选题]牛乳中脂肪含量约为( )。A.2.8%~4.0%B.2.8%~3.8%C.1.8%~4.0%D.1.8%~3.5%
[单选题]牛乳中脂肪含量约为()。A.2.8%~4.0%B.2.8%~3.8%C.1.8%~4.0%D.1.8%~3.5%
[单选题]牛乳中脂肪含量约为()。A.2.8%~4.0%B.2.8%~3.8%C.1.8%~4.0%D.1.8%~3.5%
[单选题]牛乳中脂肪含量约为()。A.2.8%~4.0%B.2.8%~3.8%C.1.8%~4.0%D.1.8%~3.5%
[单选题]牛乳中脂肪含量约为()。A.2.8%~4.0%B.2.8%~3.8%C.1.8%~4.0%D.1.8%~3.5%
[单选题]乳脂中的饱和脂肪酸含量为()。A .23%B .34%C .48%D .66%