【单选题】Do you have anything to declare? A. Why do I have to declare? B. I have nothing to declare. C.

2.I have nothing to declare.

16.Go through the red channel if you have something to declare.

The green channel at the customs is for those who has nothing to declare.

The green channel at the customs is for those who has nothing to declare. A: 正确 B: 错误

以下局部变量的声明语句正确的是（ ） A: DECLARE @a int，@b int B: DECLARE @a，@b int C: DECLARE @@a int，@@b int D: DECLARE @@a，@@b int

If you do have items to declare, proceed to the red lanes marked "Goods to Declare".

下面声明变量的是 ( ) A: declare x char default outer B: declare x char default ‘outer’ C: declare x char(10) default outer D: declare x char(10) default ‘outer’

下面声明变量正确的是( )。 A: DECLARE x char(10) DEFAULT 'outer ' B: DECLARE x char DEFAULT 'outer ' C: DECLARE x char(10) DEFAULT outer D: DECLARE x DEFAULT 'outer '

在SQL Server 数据库中，以下对变量的定义错误的是（ ）。 A: DECLARE @username varchar(10) B: DECLARE @RowCount varchar(30) C: DECLARE @@username varchar(10) D: DECLARE @@RowCount varchar(30)