【单选题】Which of the following statements is true according to the passage?
A.
It's great fun to live in big cities like Chicago.
B.
There are many stores and restaurants in the Merchandise Mart.
C.
It's not a good thing to have too many neighbors.
D.
There are very many tall buildings in Chicago.
【判断题】程序段N0040 T0100;表示调用刀补。( )
【单选题】在java.sql包中,关于Statement和PreparedStatement的区别,描述正确的是()
A.
Statement负责查询,PreparedStatement负责更新和删除
B.
Statement在删除数据时效率更高;PreparedStatement是预编译的,对于批量处理可以大大提高效率。
C.
Statement每次执行一条SQL命令时,都会对它进行解析和编译,PreparedStatement执行同一条SQL命令N次,都只对它解析和编译一次
D.
当同一条SQL命令需要执行多次时用Statement,当需执行一次时用PreparedStatement可以提高效率。
【判断题】五行中相侮的次序是:木侮金,金侮水,水侮火,火侮土,土侮木。
【判断题】读诗词的时候,合理的联想和延伸能使读者达到更高的欣赏境界。()