mA抗体是如何产生的？
参考答案：
临床上HLA抗体多由妊娠、输血或器官移植等免疫产生。
The little girl often makes his mother ______ him _____ .[ ]
A. talk, something interesting
B. tell something interesting
C. say, interesting something
D. speak, interesting something
计算题：某聚合物开发区块面积20.5km2，油层有效厚度14.6m，平均孔隙体积26.0%，注入速度0.14PV/a，注入浓度1200mg/L，计算年平均日注入量、日注干粉量？
