对小夹板固定者的护理，下列哪项不妥

A．注意观察肢体的血运、感觉及运动
B．抬高患肢
C．告诉病人定期复诊
D．缚夹板的带结以不能上下移动为宜
E．可早期进行患肢功能锻炼

Public address system: loudspeakers in the vessel’s cabins, mess rooms, ETC., and on deck via which important information can bebroadcast from a central point, mostly from the navigation bridge defines（）.

A.PP-system

B.PA-system

C.AP-system

D.AA-system