【判断题】"What is Halloween?" is an effective specific purpose statement because it can arouse the curiosity of an audience.( )
【简答题】某学校的教学信息关系数据库中有如下两个表: 学生表(学号,姓名,性别,专业) 成绩表(学号,课程名,分数) 用SQL语句表达下述查询: (a)检索分数高于80分的所有学生的学号和分数。 (b)检索选修了“高等数学”课程的所有学生的学号。
【单选题】What is an effective way to preserve biodiversity?
A.
Reduction of the impact of species extinction on others.
B.
Sustainable management of the world's tropical forests.
C.
Encouragement of political will to reduce gas emission.
D.
None of the above. No effective way has been found yet.
【简答题】What is an effective title for an academic paper?
【简答题】●试题三 对于教学数据库的三个基本表S(S#,SNAME,AGE,),SLLS#,C#,GRADE),C(C#,CNAME,TEACHER)。现根据查询条件填充下面SQL语句空白的部分。 1.检索LIU老师所授课程的课程号和课程名。 2.检索至少选修LIU老师所授课程中一门课程的女学生姓名。 3.检索WANG同学不学的课程的课程名。 4.检索全部学生都选修的课程的课程号与课程名。 5.检索选...
【单选题】What is an effective ,resilient and painless way of improving the safety climate in an organization?