注射液的pH应在
A.2~5
B.4~9
C.7~8
D.5~11
E.2~10
参考答案:B
解析:注射液的pH应在4~9范同内,过酸或过碱在肌注时将引起疼痛和组织坏死。
桂枝芍药知母汤与乌头汤的共有药物成分是( )
A.麻黄
B.芍药
C.桂枝
D.生姜
E.防风
— I ____ to your birthday party last Sunday.
— Unfortunately, you were out on business.
A.had come
B.came
C.would come
D.would have come