测定ABO血型常用的方法是（）。
A.玻片凝集法
B.间接凝集法
C.单扩散
D.试管凝集法
E.间接凝集抑制法
参考答案：A
根据句意及汉语提示填空。
1. If I have a _______(机会), I believe I will do better next time.
2. All the football players must _______(遵守)the football rules.
3. It's very nice of you, but I can_______(对付) the box myself.
4. Dr. White _______(发明)a kind of new medicine last year.
5. One of my teammates fell ill, so he can't _______(训练)with us now.
免疫浊度试验的基本原则是
A．体系中保持抗原过量B．体系中保持抗体过量C．体系中合适的离子强度D．体系中合适的pH值E．必要时可加入增浊剂
