核心问题
A look of vague recollection crossed her face. 'Ah, yes, of course. The blade represents all that is masculine. I believe it is drawn like this, no?' Using her index finger, she traced a shape on her palm. (Dan Brown, The Da Vinci Code) 这里的附加疑问用的是 no。按照我学过的英语语法，这里应当用 isn't it。
词典解答
在附加疑问句里用 no, 是美国英语的特殊用法, 见 tag questions 。