（58）Which statement is true when Automatic Workload Repository（AWR）baselines are created using baseline templates?

A. AWR baselines are always created as repeating baselines.

B. AWR baselines can be created on the basis of two time values.

C. AWR baselines are always created with infinite expiration duration.

D. AWR baselines are always created using the Automatic Workload Repository(AWR) retention period as expiration duration.

答案：（B）

解析：

A（X）. 基本模板主要是指在未来时段上创建基线,可以是单一时段,也可以是重复调度.