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【多选题】
在用重量法测定脂肪含量时,下列哪些数据需要准确称量取?A.
烧瓶提取前重量
B.
提取溶剂的体积
C.
滤纸筒的重量
D.
待提取物的重量
E.
烧瓶提取后挥干溶剂后重量
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反馈参考答案：
举一反三
【简答题】将二进制数11010101．110101转换为八进制数和十六进制数。
【简答题】将下列二进制数转换为等值的八进制数和十六进制数。
【简答题】将二进制数(110101111.110) 2 转换为十进制、八进制和十六进制数。
【简答题】二进制数转换为八进制、十六进制数: 1100101 转换为:八进制: 1 ,十六进制: 2 101100110 转换为:八进制: 3 ,十六进制: 4 100111010 转换为:八进制: 5 ,十六进制: 6 1110010101
【单选题】Which is not true for the development and aging of ABO system?
A.
ABO antigens can be detected on red cells of embryos as early as 5 to 6 weeks of gestation.
B.
Adult levels of ABO expression are generally present by age 2 to 4 years.
C.
Endogenous synthesis of anti-A and anti-B can develop as early as at birth, with nearly all children displaying the appropriate isohemagglutinins in their sera at 3 to 6 months of age.
D.
Titers of anti-A and anti-B continue to increase during early childhood and achieve adult levels within 5 to 10 years.
【简答题】将十六进制数(12F)H转换为八进制数是______。
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