为确保数据库的质量，必须对入库数据进行严格的检核，确保数据的（）。
A.及时性
B.规范性
C.完整性
D.完备性
E.一致性
参考答案：C, D, E
Statistics show that men have _____ as women do for every mile they drive．
A．serious accidents as twice many
B．twice as many serious accidents
C．twice serious accidents as many
D．serious accidents as many twice
在薛定谔方程中，波函数ψ描述的是（）。
A.几率密度
B.几率
C.核外电子运动的轨迹
D.核外电子的空间运动状态
