单项选择题
A.1为做定位，0为不做定位 B.0为做定位，1为不做定位 C.空值为做定位 D.空值为不做定位
A.1代表宏站，0代表室分 B.0代表宏站，1代表室分 C.0代表宏站和室分 D.1代表宏站和室分
A.create user fast identified by fast*123 B.create user fast password by fast*123 C.create users fast identified by fast*123 D.created users fast identified by fast*123