强镇痛药中,"为一种人工合成镇痛药,镇痛强度为吗啡的1/10,不良反应较吗啡轻"为()。
A.吗啡
B.罗通定
C.二氢埃托啡
D.延胡索乙素
E.哌替啶(度冷丁)
参考答案:E
Lucy is as _____ as Lily. [ ]
A. carefully
B. careful
C. more careful
D. more carefully
在ado.net中,理解成Command的容器的是()?
A.DataAdapter
B.Connection
C.DataReader
D.DataSet