存查煤样样品量不少于（），保存时间自报出结果之日起计算为（）_爱下问搜题

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问题填空题

存查煤样样品量不少于（），保存时间自报出结果之日起计算为（）

答案

参考答案：0.5kg（或500g）;2个月

单项选择题

下列选项不是病原体初步诊断的是（）

A.直接染色镜检

B.特异性抗原检测

C.血清学检测特异性IgG和（或）IgM抗体

D.借助分子生物学方法检测病原体核酸

E.分离鉴定病原体及药敏试验

单项选择题

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TeamWise

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Who is Jenna Jonman

A. The director of TeamWise
B. An event manager
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