腺瘤发病率最重要的独立决定因素是()
A.患者年龄>60岁
B.结肠癌家族史
C.腺瘤家族史
D.种族
E.性别
参考答案:A
非公开发行股票发行对象不超过( )名。
A.10 B.20 C.30 D.50
Which of the following indicates the acceptable range of variation of a process as represented on the control chart ?()
A.Mea
B.Specification limi
C.Rule of seve
D.Upper and lower control limit