【单选题】若事务T对数据 R已加 S锁,则其他事务对数据R( )。
【单选题】在双侧壁导坑法施工过程中,侧壁导坑形状宜近椭圆形,导坑跨度宜为整个隧道跨度的( )倍
【简答题】Directions: There are 15 blanks in the following passage. For each blank there are for choices marked A ,B ,C and D. You should decide on the best choice to complete the passage. One summer, when I wa...
【单选题】若事务T对数据R已加X锁,则其他事务对数据R
【简答题】听下面一段对话,回答第1至3小题。 1.When did the speaker get the summer job? [ ] A.At the age of 16. B.At the age of 15. C.At the age of 14. 2.What didn't the speaker do in the hospital? [ ] A.Looking after t...
【单选题】若事务T对数据R已加S锁,则其他事务对数据R(51)。
【简答题】阅读并判断对错 5 When a Korean woman who lives in the United States arrived at work one morning, her boss asked her, “Did you get a plate?” “No...” she answered, wondering what in the world he meant. She wor...
【单选题】若事务T对数据R已加X锁,则其他事务对数据R
【单选题】若事务T对数据 R已加 S锁,则对数据R( )