在安排发展性支出中,首先应安排的是( )。
A.逐步提供职工生活水平
B.公共基础设施投资
C.增加国家物资储备
D.非生产性基本建设投资的最低需要
参考答案:B
It was dangerous for you to swim in that river. You eaten by the fish. [ ]
A. might have been
B. must have been
C. could have been
D. should have been
二维表由行和列组成,每一列都有一个属性名被称为 ______。
A.属性
B.字段
C.集合
D.记录