单项选择题
A.select *from sc where score>60or course=’math’;B.select sname from sc where score>60and course=’math’;C.select course from sc where score>60or sname=’math’;D.select sname from sc where score in (60,100)and course=’math’;
A.ApacheB.IISC.TomcatD.Nginx
A.COUNT()B.MAX()C.AVG()D.SUM()