首次提出“隐性课程”概念的学者是()。
A. 杰克逊
B. 博比特
C. 泰勒
D. 杜威
如发现主调压器皮膜有老化、裂痕现象,应()。
A. 调换新皮膜
B. 修补皮膜
C. 调换主调压器
D. 上油
The RVPC user can do which of the following?()
A. Register databases if granted the register database privilege
B. See all databases in the recovery-catalog schema
C. See all database-related metadata in the recovery catalog if they are granted access to that database
D. Unregister databases from the RVPC catalog that were not granted to the RVPC catalog owner with the grant command
E. Not be connected to with the RMAN command-line catalog parameter for backup or recovery purpose
地形图上表示山谷的等高线与山背相反,以山顶或鞍部为准,等高线向里凹入(或向高处凸出),各等高线凹入部分顶点的连线,称为()
A. 山脊线
B. 分水线
C. 合水线
D. 示波线