CD34+、CD19+细胞主要见于()
A.全能造血干细胞
B.B淋巴细胞系祖细胞
C.T淋巴细胞系祖细胞
D.髓系造血干细胞
E.粒-单核系祖细胞
参考答案:B
Questions 11 to 18 are based on the conversation you have just heard.
A.She doesn’t believe he can do it.
B.She agrees with the man.
C.She expects to see him soon.
D.She will go to the library.
完全按照客户提出的时间要求和商品品种、数量要求及时地将商品送达指定的地点,称为()。
A.定时配送
B.即时应急配送
C.定时定线配送
D.定时定量配送