问题
单项选择题
试管凝集试验常用于（）
A.抗原定性
B.抗体定性
C.抗原定量
D.抗体半定量
E.抗体定量
答案
参考答案：D
解析：试管凝集是将待检抗血清进行稀释，与一定量的已知抗原反应，以出现明显凝集所需抗血清的量(稀释度)，判断待检抗体的效价。
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试管凝集试验常用于（）
A.抗原定性
B.抗体定性
C.抗原定量
D.抗体半定量
E.抗体定量
参考答案：D
解析：试管凝集是将待检抗血清进行稀释，与一定量的已知抗原反应，以出现明显凝集所需抗血清的量(稀释度)，判断待检抗体的效价。
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| Xiao Ling has a good friend . 1 name is Lucy . She is from America . Xiao Ling and Lucy are in 2 same school . 3 they are in different classes . They go to school from 4 to Friday . They stay at 5 on Sundays . Lucy likes China and 6 food . She likes rice and cakes best . At school they play football 7 class . Xiao Ling and Lucy like making things . They 8 many model planes ,and fly them on Sundays . Lucy 9 English and they often help 10 other .
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