题型:选择题 — Mary had an accident on her way to home yesterday.— ? She is always careful.A.How comeB.Why notC.So whatD.What for 查看答案
题型:单项选择题 A1/A2型题 以下关于免疫渗滤测定(IFA)和免疫层析测定(ICA)的比较叙述错误的是()A.试剂保持时间ICA更长B.观察时间一般ICA更长,为3~20分钟C.IFA阳性反应颜色,操作结束颜色逐渐加深D.ICA为试剂条,而IFA为渗滤装置E.IFA一般在4~8℃保持,而ICA一般室温保存 查看答案