抗风压性能检测中，对幕墙进行定级检测时的变形检测，推算幕墙受力构件相对面法线挠度达到f0/2.5对应的压力差为2500Pa，则变形检测进行至（）Pa时停止检测。

A.15min
B.15min或产生严重渗漏为止
C.30min
D.30min或产生严重渗漏为止

A.1000Pa≤ΔP< 1500Pa
B.1500Pa≤ΔP< 2000Pa
C.500Pa≤ΔP< 700Pa
D.700Pa≤ΔP< 1000Pa

A.1200Pa
B.1250Pa
C.1333Pa
D.1500Pa