用于标记蛋白质醛基的,适用范围较BHZ宽的活化生物素是()
A.BCNHS
B.BCHZ
C.BHZ
D.光生物素
E.生物素脱氧核苷三磷酸
参考答案:B
I like the song _____ S.H.E. They are my favourite singers. [ ]
A. to
B. on
C. by
预防并发症和伤残工作属于()
A.一级预防
B.二级预防
C.三级预防
D.四级预防
E.综合预防