Pipeline is able to deliver the products based on the advantages of low rate of loss and damage, minimal climatic effects and reduced labor cost. Do you agree? （）

A.Yes, I do.  

B.No, I do think so.  

C.I don’t find it here  

D.I can’t find it here

幕墙工程隐框、半隐框所采用的结构粘接材料必须是（）其性能必须符相关标准的规定。

A、硅酮胶

B、中性密封胶

C、结构胶

D、中性硅酮结构密封胶