题目内容

对因时地不同而发生差异的方言词，《方言》称为（）。

查看答案

搜索结果不匹配？点我反馈

更多问题

在单链表和双向表中，能否从当前结点出发访问到任一结点？

查看答案

患者，周某，70岁，50kg体重，血液透析16年余，透析时间4小时，每周二次，低分子肝素首剂3000U，超滤为4KG。威高F16滤器，患者最近诉后背痛，双下肢无力。急查电解质：血钙浓度为1.96mmol/l，血磷浓度为2.3mmol/l，血镁浓度小于0.75mmol/l，钾离子为6.5mmol/l，请问该患者发生了何种情况？如何纠正？

查看答案

田园城市

查看答案

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to before drop； Later， the user notifies you that the data in the table seems to be very old and out of date.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.

查看答案