That's my pen. Please give ____. [ ]
A. me it
B. it to me
C. it for me
D. me for it
答案:B
在正常凝血过程中,下列哪一项不能形成复合物()
A.因子Ⅸa,Ⅷa,磷脂,Ca2+
B.因子Ⅲ,Ⅶa,Ca2+
C.因子Ⅹa,Ⅴa,磷脂,Ca2+
D.因子Ⅻa,Ⅺa,Ⅸa,Ca2+
E.血小板
单采血小板要求献血者采前外周血血小板计数____,血小板直方图显示血小板在___内()
A.≥200×109/L,2~20fl
B.≥150×109/L,2~20fl
C.≥150×109/L,3~20fl
D.≥300×109/L,2~20fl
E.≥100×109/L,3~20fl