膝关节属于()
A.单轴关节
B.双轴关节
C.三轴关节
D.四轴关节
E.复合型关节
参考答案:A
It is not easy for today's only child to accustom themselves _________ in a new place without their parents' company. [ ]
A. living
B. to live
C. to living
D. live
下列有关注射剂叙述错误的是( )
A.中药注射剂系指从药材中提取的有效物质为原料制成的注射剂B.可分为溶液型、无菌粉末、混悬型、乳浊型注射剂C.中药注射剂药效迅速,作用可靠D.注射时疼痛小、安全E.适用于不能口服给药的病人