1.While deploying a new application module, the software vendor ships the application software along with appropriate SQL plan baselines for the new SQLs being introduced. Which two statements describe the consequences? (Choose two.)
部署新的应用程序模块时，软件供应商提供新sql的执行计划基线。哪两种说法描述了这个影响？
a.The plan baselines can be evolved(演化) over time to produce better performance.
计划基线随着时间变化能提高性能。
b.The optimizer does not generate new plans for the SQL statements for which the SQL plan baseline has been imported.
优化器不会对导入执行计划的新sql产生新的计划。
c.The new SQL statements initially run with the plans that are known to produce good performance under standard test configuration.
这些新的sql会执行它们在标准测试下认为可以发挥好性能的执行计划。
d.The newly generated plans are directly placed into the SQL plan baseline without being verified.
这些新的执行计划会不经过查实就直接放到sql plan中。
答案：A C