重大事故,是指造成() 造成30人以上死亡,或者100人以上重伤。 造成10人以上30人以下死亡,或者50人以上100人以下重伤。 造成3人以上10人以下死亡,或者10人以上50人以下重伤,或者1000万以上5000万以下直接经济损失的事故。 造成3人以下死亡,或者10人以下重伤,或者1000万以下直接经济损失的事故。
Which /SQL*Plus feature can be used to replace values in the WHERE clause?() Substitution variables。 Replacement variables。 Prompt variables。 Instead-of variables。 This feature cannot be implemented through /SQL*Plu。
游戏性体验
Given that the current directory is empty, and that the user has read and write privileges to the current directory, and the following: Which statement is true?() Compilation fails.。 Nothing is added to the file system.。 Only a new file is created on the file system.。 Only a new directory is created on the file system.。 Both a new file and a new directory are created on the file system.。
更新重置成本
The users request that [F2], [F3], and [F4] be used to commit, rollback, and exit,respectively. How do you accomplish this?()