【简答题】A.You should have long hair. B.You should be in casual dress. C.You should dress according to personal taste. D.You should dress appropriately.
【单选题】用 T-SQL 语句创建数据表的时,以下描述错误的是()
【简答题】Where should you go if you want to spit? You should spit______.
【单选题】According to the passage, which of the following statements is TRUE?
A.
You should be prepared to make mistakes in communication.
B.
Words are the basis of English learning.
C.
Good pronunciation is important to an English learner.
D.
Wanting to know everything does not help you learn a language.
【单选题】Household pets (infecting) with fleas should (be bathed) weekly (with) a (specially prepared) flee soap.
【单选题】如果使用以下T-SQL命令创建book表: CREATE TABLE book ( 书号 char(6), 书名 char(16), 单价 numeric(10,2) ) 则“单价”字段的列宽是( )。
【单选题】患者男,40岁。被诊断为胃溃疡。在进行X线钡餐检查时,下列选项属于该病重要征象的是
【简答题】使用create table命令创建表test,test表共有3列,具体结构如上,创建完成后,使用alter table命令修改该表,将t_age列的可以为空改为不可为空。