问题 单项选择题

关于钼锝发生器,下列说法中错误的是:()

A.裂变型99Mo- 99 mTc发生器以Al2O3为吸附柱

B.凝胶型99Mo-99 mTc发生器以ZrOMoO4为吸附柱

C.凝胶型发生器淋洗后必须保持干柱

D.99Mo的半衰期约60 h

E.裂变型发生器淋洗后必须保持干柱

答案

参考答案:C

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     I want to be the first woman president (总统) of the United States when I grow up.    1   ? Because I want to
   2    people that girls can be as important as boys.
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单项选择题