浇筑混凝土要分层对称进行,一般每层厚度不超过30cm。
A. 对
B. 错
A:Good morning,sir.It seems that you are interested in our products ._________________?B:Yes.My name is Jose Garcia,I'm from Spain,and this is my business card.
A:Glad to meet you.______________________________?B:Yes,please.Please show me the latest products.
A:Here are some samples of different patterns.______________________________? .B:I would like something elegant with some oriental characteristics