分析报告编制过程中“迭代完善”步骤的工作内容包括：

A. 产品营销

B. 决策支持

C. 风险管理

D. 以上全是

A. 准确率

B. 召回率

C. 精确率

D. F1分数

A. 逻辑回归

B. 随机森林

C. GBDT

D. K-means

A. truncate table t0;

B. delete from t0;

C. truncate from t0;

D. delete table t0;

A. 基础数据目录

B. 指标报表目录

C. 挖掘模型目录

D. 以上都不对

A. Delete * From A WhereB=＇6＇

B. Delete From A Where B = ＇6＇

C. Delete A Where B = ＇6＇

D. Delete A Set B = ＇6＇

A. 2ac

B. abc

C. a_b

D. _a