每个表都应该设置________________,用来唯一地标识记录。
参考答案:主键
— Could you tell me _____?
— Sure, eleven o'clock. [ ]
A. where will you go on vacation
B. when does she go to school
C. when the next bus will arrive
D. where you were born
( )是指国家通过金融系统调节货币供应量,实现宏观经济目标的一种经济政策。
A.财政政策
B.货币政策
C.产业政策
D.收入分配政策