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【简答题】
补充数据定义SQL 语句,要求必须包括关键字定义PRIMARY KEY及外键约束FOREIGN KEY子句 Create table schoolCard( CNo int primary key, SNO int not null, cardDate datetime default getdate(), remainingSum numeric(7,2) default 0, -- 此处需补充外键定义(3分) (表级约束,外键) ) ; /* 食堂就餐消费记录表*/ Create table foodConsume( -- 此处需补充该表的完整定义(7分) (DDL 使用能力测试) ) 2. 在食堂就餐消费记录表foodService 表中消费金额字段上建立索引,并按降序排列。(2分) 3. 修改stuInfo表的结构,增加1个MobilePhone(手机号)字段,类型为char(13)。(3分)
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【单选题】Why does the man like doing extreme sports?
A.
He is not afraid of getting hurt.
B.
Extreme sports are competitive sports.
C.
He thinks extreme sports are interesting
D.
He thinks his life is boring.
【单选题】How can people reduce the level of danger when doing extreme sports?
A.
Reduce the times of doing extreme sports.
B.
Wear safety equipment.
C.
Do extreme sports with other people.
【单选题】Some extreme sports ______.
A.
cost a lot of money,
B.
belong in the category of popular sports.
C.
waste your time.
D.
are forbidden.
【简答题】系统设计的五个指标是可靠性、工作质量、________、工作效率和经济性。
【单选题】Some extreme sports_____.
A.
cost a lot of money
B.
belong to the category of popular sports
【多选题】Extreme sports are also called ( ).
A.
action sports
B.
active sports
C.
adventure sports
D.
air sports
【简答题】Some extreme sports __________. (10.0分)A. cost
a lot of money B. belong to the category of popular sports
【简答题】Sure，you’ve watched extreme pet sports on Animal Planet. But did you know that there’s a whole world of athletic activities for dogs right in our area? There are some reasons for considering taking pa...
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