下列物质中,属于盐的是( )
A.NaOH
B.H2SO4
C.Na2SO4
D.Ca(OH)2
答案:C
I tried several jackets on, but of them looked good on me.
A.both
B.either
C.none
D.neither
描述炎性浸润期压疮,下列哪项不正确
A.皮肤呈紫色B.皮下硬结C.有大、小水疱D.水疱表皮剥脱,露出湿润的创面E.创面上有脓性分泌物