下列命令不能执行的是（）。 A: SELECT*FROM[select] B: SELECT*FROM@MyTable C: SELECT*FROM[MyTable] D: SELECT*FROMMyTable

在SQLServer中，下列标识符可以作为本地临时表名的是（）。 A: ##MyTable B: @@MyTable C: @MyTable D: #MyTable

ADO.NET中，要向DataTable对象中添加一列，以下C#代码正确的是（选一项） A: myTable = new DataTable("Months"); myTable.Columns.Add("Month", string); B: myTable = new DataTable("Months"); myTable.Columns.Add("Month", typeof(string)); C: myTable = new DataTable("Months"); myTable.Columns.Add("string",Month)); D: myTable = new DataTable("Months"); myTable.Columns.Add(string ,"Month"));

写出删除MyTable表的SQL语句。

要删除mytable表中的myindex索引，可以使用（）语句。

Ifyouknowthetwosentencesaredifferent_____eachother,youhadbettertellusthedifference_____them. A: between;from B: from;between C: from;from D: from;with

This messagecomes to us from many_____: from school, from parents, even from politicalfigures referring to “traditional values”.

Bob is quite different ______ he was in school. A: from that B: from with C: from which D: from when

The culture ______Tang Dynasty. A: hears from B: dates from C: keeps from D: knows from

Chocolate ______ cocoa beans. A: grows from B: made from C: comes from D: produces from