()属于β-内酰胺类抗生素
A.庆大霉素
B.红霉素
C.头孢三嗪
D.克林霉素
参考答案:C
Wait a moment, I have _______ to tell you.
A.important something
B.something important
C.anything important
D.important anything
压力容器内部有压力时,严禁进行任何修理或紧固工作。