组织配型时优先考虑的抗原位点是 （）
A.HLA-DP
B.HLA-DQ
C.HLA-DR
D.HLA-A
E.HLA-B
参考答案：C
Fill in the blanks. 请根据汉语提示填空。
1. Did you go (购物)?
2. It's just (合适) for my doll.
3. Kim (步行) to the zoo yesterday.
4. Let's put it (在……上方) my bed.
5. I wanted to fly a kite, but it was too (难).
按溢流能力不同，安全阀分为哪几种？各适用于什么场所？
