血小板特异性抗体单独存在的几率大约是()。
A.2%~3%
B.6%~9%
C.10%~15%
D.16%~20%
E.21%~25%
参考答案:A
We are so sorry for that.We'll try to determine exactly _________ went wrong that evening.
A.where
B.what
C.which
D.how
以下哪种物质属于碱性氮()
A.吡啶
B.吡咯
C.吲哚
D.咔唑