A. select * from emp wher sal in (2000,3000); B. select * from emp wher sal like (2000,3000); C. select * from emp wher sal = (2000,3000); D. select * from emp wher sal between 2000 and 3000
A. 0℃以下 B. 0℃~5℃ C. 5°~10℃ D. 不低于-20℃
A. 小 B. 大 C. 相同 D. 无法确定