There is _________ swimming pool in front of Jhon's house.

A．an 80- metres-long

B．a 80- metre-long

C．80 metres long

D．an 80- metre – long

如果（）在计划更换时间仍干燥，应延长更换敷料间隔或者更换其他类型敷料。

A.透明薄膜敷料

B.水胶体敷料

C.水凝胶敷料

D.藻酸盐敷料

E.硅胶敷料

F.泡沫敷料