简述消化性溃疡的常见并发症
参考答案:
(1)上消化道出血。
(2)穿孔。
(3)幽门梗阻。
(4)癌变。
颈椎右前斜位摄影,观察的是().
A.右侧椎间孔
B.左侧椎间孔
C.右侧横突孔
D.左侧横突孔
E.椎孔
What will be accepted as the shipping papers for an unmanned tank barge but will not be accepted if the tank barge is manned?().
A.Bill of lading
B.Logbook entry
C.Manifest
D.Shippi g document