根据《加强土地税收管理的通知》的有关要求，核定城镇土地使用税等级与税额标准的依据之一是( )地价。
A．基准 B．成交C．标定 D．出让
参考答案：A
Without facts, we can't form a worthwhile opinion for we need to have factual knowledge _____ our thinking. [ ]
A. upon which to base
B. which to be based on
C. which to base on
D. to which to be based on
CT的硬件构成包括（）
A.扫描架
B.X线发生器
C.数据采集系统
D.数据处理系统
E.检查床
