屋面卷材本身无保护层时，应另作保护层，宜粘贴铝箔保护层，或直接采用铝箔面卷材作防水层。( )
参考答案：对
—What _____ he doesn't come to your party?
—Well, I don't mind. [ ]
A. then
B. if
C. whether
D. about
阈刺激
