质量管理要有（）的标准规范。
A、测试和验收
B、测试
C、验收
D、以上都不对
参考答案：A
14．_______on May 12,2008, Wenchuan county has taken on dynamic new look gradually two years since then.
A．Although it destroyed
B．Although destroyed
C．Although was destroyed
D．Although destroying
21岁男性，体检发现肝右叶6cm占位，CT及MRI扫描除病灶中央可见放射状低密度/低信号影外，病灶实体未见显示，应首先考虑（）。
A.原发性肝癌
B.局灶性结节增生
C.肝血管瘤
D.介入后致密斑
E.肝脏炎性假瘤
ears since then.