调节pH
A.肾上腺素B.维生素CC.青霉素G钾盐D.易发生氧化反应E.硝普钠
参考答案:A
I would appreciate ______ if you could let me know in advance when the meeting will be held.
A.that
B.this
C.it
D.you
以下血管瘤中,有自然消退倾向的是()
A.草莓状血管瘤
B.海绵状血管瘤
C.血管球瘤
D.鲜红斑痣
E.单侧痣样毛细血管扩张