油缸内渗严重时的现象是油缸支撑不住，必须要更换活塞。
参考答案：错
Which one of the following observation would the nurse evaluate as an expected outcome for a client who has undergone surgical repair of an inguinal hernia
A. The client will remain on a soft diet until the wound is healed.B. The client’s voiding patterns will return to normal within 6 months after surgery.C. The client will use a cane for assistance with ambulation for 2 to 6 weeks after surgery.D. The client will verbalize understanding of instructions to avoid lifting for 2 to 6 weeks
概念结构设计阶段得到的结果是( )。
A．数据字典描述的数据需求B．E-R图表示的概念模型C．某个DBMS所支持的数据模型D．包括存储结构和存取方法的物理结构
