早期孤立阿弗他溃疡,用何种药物灼治可促进愈合并止痛()
A.3%碘酊
B.70%乙醇
C.20%三氯醋酸
D.10%硝酸银
E.3%过氧化氢
参考答案:D
----Sir, I put my bag on the desk but now it is gone .
----Don’t worry. _____.
A.You should be responsible for it .
B.I’ll look into it immediately
C.I don’t care about it
D.I’m sorry to hear that
非累积优先股票是指除了按规定分得本期固定股息外,无权再参与对本期剩余盈利分配的优先股票。( )