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【简答题】
以下MySQL语句中,已知关系模式course(Cno,Cname,Cperiod,Ccredit)和stu_course(Sno,Cno,Term,Grade),在stu_course和course表中,查询选修高等数学课程的所有记录,不正确的是( )。 A. SELECT * FROM course JOIN stu_course ON course.cno = stu_course.cno where Cname='高等数学'; B. SELECT * FROM course JOIN stu_course WHERE course.cno = stu_course.cno AND Cname='高等数学'; C. SELECT * FROM course JOIN stu_course where Cname='高等数学'; D. SELECT * FROM course INNER JOIN stu_course ON course.cno = stu_course.cno where Cname='高等数学';
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【简答题】在国际象棋棋盘的个格上依次放入小麦1粒、2粒、4粒、8粒...,求按此规律放满个格需要多少粒小麦。 s,i=0,【1】 while i<=63: s+=2**【2】 i【3】=1 【4】("需要%d粒小麦。" %s)
【单选题】I advise you leave the company as soon as possible you get yourself into trouble. [ ]
A.
before
B.
until
C.
as soon as
D.
in that case
【单选题】Any suggestions for the project?()
A.
I need your advice on it.
B.
I advise you to put more hands in this project.
C.
Thanks for your suggestions.
【单选题】When you rewrite the paragraph, I advise you to leave out is thought unnecessary or misleading.
A.
where
B.
which
C.
these
D.
what
【单选题】When you rewrite the paragraph, I advise you to leave out ____ is thought unnecessary or misleading. [ ]
A.
what
B.
that
C.
these
D.
which
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