题目内容

原发性肾病综合征在激素无效后，可加用的药物为()

A. 环孢素
B. 硫唑嘌呤
C. 苯丁酸氮芥
D. 环磷酰胺
E. 以上都是

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Which two statements are true about WHERE and HAVING clauses? （）

A WHERE clause can be used to restrict both rows and groups.
B. A WHERE clause can be used to restrict rows only.
C. A HAVING clause can be used to restrict both rows and groups.
D. A HAVING clause can be used to restrict groups only.
E. A WHERE clause CANNOT be used in a query if the query uses a HAVING clause.
F. A HAVING clause CANNOT be used in subqueries.

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