— Sorry. We don't have a T-shirt like that.
—
A:Thank you all the same.
B:You are right.
C:Not at all.
D:Can I try it on?
下列句子中,划线的词语使用不正确的一项是( )
Na2FeO3是一种绿色、无污染的净水剂。则其中铁元素的化合价为( )