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【单选题】
数据删除操作与哪一种完整性约束有关系?A.
实体完整性
B.
参照完整性
C.
用户定义完整性
D.
以上都是
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反馈参考答案：
举一反三
【多选题】以下自动变速器挡位与汽车点火起动的关系正确的是
A.
N挡时发动机可以成功点火起动
B.
P挡时发动机可以成功点火起动
C.
D挡时发动机不能成功点火起动
D.
任意档位发动机均可成功点火起动
【单选题】—What do you think of the little blind singer? —I’ve never seen such a singer with________ sense of music.
A.
the better
B.
a better
C.
a good
D.
the best
【单选题】若要获得Data Grid View控件dgv _ singer中当前选中行的歌手名(歌手名 dgv _ singer中列名为col Singer Name,在数据库表中的字段名为Singer Name)则下列代码正确的是()
A.
String singer Name= dgv _ singer. Selected Rows [0] [“Singer Name”].Value. To String()
B.
String singer Name= dgv _ singer. Selected Rows [0] [“ col Singer Name”].Value. To String()
C.
String singer Name= dgv _ singer. Selected Rows [0].Cells [“ Singer Name”].Value. To String()
D.
String singer Name= dgv _ singer. Selected Rows [0]. Cells [“col Singer Name”].Value. To String()
【单选题】在窗体中添加名为dgv _ singer的Data Grid View控件,若需要将Data Set对象ds中的singer表数据显示在dgv_ singer控件中,则下列代码正确的是()
A.
dgv _ singer. Data Source =ds[0]
B.
dgv _ singer. Data Source =ds. Tables[0]
C.
dgv _ singer. Data Source =ds. Tables [“Singer “]
D.
dgv _ singer. Data Source =ds[“Singer “]
【多选题】Who is Lauren Singer?
A.
She is a singer.
B.
She teaches people how to live a zero-waste life on the Internet.
C.
She collect everything she used for the last four years.
D.
She is a student who is applying for internship of an environment organization.
【简答题】A．ringer B．hanger C．finger D．singer
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