【简答题】unit14 语法填空8.Could you tell me some __________ things about your work.(fun)
【判断题】方差分析是为了推断多个总体的方差是否相等而进行的假设检验。
【判断题】方差分析是为了推断多个总体的方差是否相等而进行的假设检验。
【简答题】This coat is very cheap. I ____ (take) it now. 7. I ́ll tell him about it when he ____ (come) back. 8. Could you tell me how .I ____(can get) to No 3 Middle school. 9. He ____ said that the new teache...
【简答题】Could you tell me how .I ____(can get) to No 3 Middle school. 9. He ____ said that the new teacher ____ (give) the students an English lesson now. 10. I ____ (milk) a cow three times.
【单选题】有关系S(S#,SNAME,SEX),C(C#,CNAME),SC(S#,C#)。其中S#为学生号,SNAME为学生姓名,SEX为性别,C#为课程号,CNAME为课程名。要查询选修“网络技术”课的全体男学生姓名的SQL语句是SELECT SNAME FROM S,C,SC WHERE ( )。
A.
S.S#=SC.S# AND SEX=′男′AND CNAME=′网络技术′
C.
S.S#=SC.S# AND C.C#=SC.C# AND CNAME=′网络技术′ C.S.S#=SC.S# AND C.C#=SC.C# AND SEX=′男′AND CNAME=′网络技术′
D.
SEX=′女′AND CNAME=′网络技术′
【单选题】有关系S(S#,SNAME,SEX),C(C#,CNAME),SC(S#,C#)。其中S#为学生号, SNAME为学生姓名,SEX为性别,C#为课程号,CNAME为课程名。要查询选修“计算机”课的全体女学生姓名的SQL语句是“SELECT SNAME FROM S,C,SC WHERE”子句。这里WHERE子句的内容是
A.
S.S#=SC.S# AND SEX='女' AND CNAME='计算机'
B.
S.S#=SC.S# AND C.C#=SC.C# AND CNAME='计算机'
C.
SEX='女' AND CNAME='计算机'
D.
S.S#=SC.S# AND C.C#=SC.C# AND SEX='女' AND CNAME='计算机'