[问答题] 简述意外伤害保险的含义。

金融机构大额交易和可疑交易报告管理办法》（中国人民银行令〔2016〕第3号，以下简称3号令）颁布时间是（）年 ["2016","2017","2006","2007"] Which two statements are true regarding B-tree indexs（） ["The leaf blocks in the index are doubly linked.","The leaf node stores a bitmap for each key value.","The rows with NULL value in key columns also have entries in the index.","The deletion of a row from the table causes a logical deletion in index leaf block and the space becomesavailable for the new leaf entry"] 水和食物中的有害物质主要是通过（）吸收。 ["呼吸道","消化道","皮肤","肌肉"] 信任是人格发展中（）的普遍现象。 Why would you use the following FLASHBACK TABLE command？（） FLASHBACK TABLE emp TO TIMESTAMP （’11：45’，’hh12：mi’）;  ["to undo the changes made to the EMP table since the specified time","to restore the EMP table that was wrongly dropped from the database","to view the transactions that have modified the EMP table since the specified time","to view the changes made to the EMP table for one or more rows since the specified time","to recover the EMP table to a point in time in the past by restoring the most recent backu"] 简述意外伤害保险的含义。