At the request of a user, you issue the following command to restore a dropped table: flashback table "BIN$F2JFfMq8Q5unbC0ceE9eJg==$0" to before drop; Later, the user notifies you that the data in the table seems to be very old and out of date. What might be the problem?()
A. Because a proper range of SCNs was not specified, the wrong data was restored.
B. A proper range of timestamps was not specified, so the wrong data was restored.
C. A previous Flashback Drop operation had been performed, resulting in multiple versions of the table being stored in the Recycle Bin.
D. Either option A or B could be correct. Not enough information was provided to determine which.
E. None of the above.
女,12岁,因眩晕,视物不清3天,惊厥1次入院。近2个月来学习成绩明显下降,3天前出现眩晕和视物不清,惊厥呈癫痫大发作,持续4分钟,发作后嗜睡。体检阳性发现为:左面神经麻痹,有舞蹈样动作,右下肢肌张力减弱,隐约可见面部蝶形红斑,血清ANA阳性。本病最可能出现的后遗症是()
A. 关节严重畸形
B. 慢性肝硬化
C. 强直性脊柱炎
D. 严重。肾损害
E. 视力障碍
因为有新任务,老张希望小杨接手他手中的部分工作,但他说得比较含蓄,小杨理解的意思和他想表达的有出入。老张把这一情况反馈给领导老丁,老丁的理解就成了:小杨没理解老张的意思,是因为他不想接这项工作,是工作态度的问题。下列关于小杨、老张、老丁的说法,正确的是()。
A. 雾霾仅是污染中的一种
B. 工作转交,公事公办,老张不直接明了表达自己的想法,说明他对工作转交的认识不够正确
C. 老张发现和小杨的沟通没有达到预期目标,没有积极想办法补救,而是直接把问题转述给丁班长,说明老张的职业素养有待提升
D. 老丁听取老张的一面之词,就认定问题出在小杨身上,可见老丁的处理方式很有问题,由此可以推断他的团队一定存在较大的问题,不是一个合格的管理者
9个月男孩。6天来发热、咳嗽。2天来喘憋加重,1天来嗜睡,抽搐2次急诊。体温38.5℃,呼吸56次/分,心率160次/分,惊厥状态中,前囟膨隆,双肺有密集细湿啰音,肝肋下1.5cm,末梢血:白细胞4.4×109/L,血钙2mmol/L。脑脊液检查除颅压高外无其他异常。对该患儿的治疗,哪项是不恰当的()
A. 用菌必治加西力欣
B. 保证呼吸道畅通,吸氧
C. 镇静、止咳
D. 适当用脱水药
E. 应用血管扩张药