数据分析类项目的实施采用联合团队形式，团队成员来源于项目实施部 门，且一般由____担任。

A. 数据总结

B. 时间序列

C. 聚类

D. 回归

A. 数据授权

B. 模型授权

C. 代码授权

D. 全部授权

A. LOWER(str)

B. LCASE(str)

C. RTRIM(str)

D. UPPER(str)

A. ADD TABLE S (CN CHAR(8))

B. ADD TABLE S ALTER (CN CHAR(8))

C. ALTER TABLE S ADD (CN CHAR(8))

D. ALTER TABLE S (ADD CN CHAR(8))

A. A.XGBoost

B. B.决策树

C. C.线性回归

D. D.逻辑回归

A. SELECT cust_id FROM Orders WHERE order_num IN (SELECT cust_id FROM OrderItems WHERE prod_id = ＇RGAN01＇);

B. SELECT cust_id FROM Orders WHERE order_num IN (SELECT order_num FROM OrderItems WHERE prod_id = ＇RGAN01＇);

C. SELECT * FROM Orders WHERE cust_id IN (SELECT cust_id FROM OrderItems WHERE prod_id = ＇RGAN01＇);

D. SELECT * FROM Orders WHERE cust_id IN (SELECT order_num FROM OrderItems WHERE prod_id = ＇RGAN01＇);

A. 市场风险

B. 操作风险

C. 信用风险

D. 流动性风险