火箭免疫电泳时,沉淀峰顶部呈不清晰的云雾状提示()
A.抗原不纯
B.抗体不纯
C.抗原过量
D.电流过大
E.电泳未达终点
参考答案:E
阅读短文,补全下列句子(每空一词)。
Lily is from New York , the U.S.A. She is twelve. She is in Shanghai NO.3 Junior High School. She
is in Class Eight, Grade One. Her phone number is 66786019. Dongdong is from Kunming. His English
name is Tom. He is eleven .He is in Class Seven,Grade One. His telephone number is 24524233. They
are not in the same class. They are good friends.
1. Lily is in No. _____ Junior High School.
2. Dongdong is in Class _____ .
3. Lily and Dongdong are good _____.
4. Tom is from _____.
5. Lily is _____ years old.
上市公司的下列会计行为中,出于会计核算重要性要求考虑的是( )。
A.本期将购买办公用品的支出直接计入当期费用
B.对应收账款计提坏账准备
C.将融资租人的固定资产作为企业的资产
D.对售出商品可能发生的保修义务确认预计负债