CSF
参考答案：
能够刺激多能造血干细胞和不同分化发育阶段的血细胞增殖分化，在半固体培养基上形成相应细胞集落的细胞因子。
⑴ 从B栏中找出与A栏相对应的答语，并在答题卡的相应位置将其涂黑。 (5分)
A B
小题1:How far is your home from school? A. It’s great! I really love living there.
小题2:I wish I could fly to the moon one day. B. It’s two o’clock.
小题3:What’s the time now? C. About ten minutes’ C.walk.
小题4:How do you like living in the country? D. Of course not.
小题5:Would you mind my opening the window? E. I hope your dream will come true.
离心泵运行前要做那些工作？
