A continuous watertight bulkhead on a ship is normally also a(n)（）.

A.structural bulkhead

B.exterior bulkhead

C.centerline bulkhead

D.joiner bulkhead

肺门位置上抬见于（）

A.纤维化

B.右上叶不张

C.肺动脉狭窄

D.左上叶不张

E.上叶纤维空洞型结核