单项选择题

属长期备用医嘱的为( )

A.速尿5mg,im,st
B.度冷丁5mg,im,q6h,prn
C.安眠酮0.2g,po,qh,sos
D.庆大霉素8万U,im,bid
E.棕色合剂10ml,po,tid