经营预测模型有以下三类：（）、相关关系模型、结构关系模型。
两台变压器并列运行时，如果其他条件相同，只有短路电压不同，则（）。 .短路电压大的，带负荷多。 短路电压小的，带负荷多。 两台一样多。
In which scenario will you perform a user-managed incomplete recovery？（） when a table is dropped and stored in the Recycle Bin。 when a table is dropped and purged from the Recycle Bin。 when you are required to recover an existing table to its previous state。 when you are required to view all the versions of a row of an existing table between a specific time period。
Your test database is running in NOARCHIVELOG mode. What are the implications of this？ （） You can perform open database backups.。 You can perform closed database backups.。 You cannot perform schema-level logical backups.。 You can perform the backup of only the SYSTEM tablespace when the database is open.。
通过物流资源的需求方、供给方和第三方（法律）来共同治理的模式称为（） 三边治理。 市场治理。 多边治理。 双边治理。
Which three elements can a job chain process involve？（）
