在大接地电流系统中发生接地故障时，保护安装地点的零序阻抗角决定于（）。 该点至故障点的零序阻抗角。 该点至故障点的复合阻抗角。 故障点至背后零序网络中性点之间的零序阻抗角。
While creating a scheduler window using the DBMS_SCHEDULER package， a user logged in as DBMGR gets the error message insufficient privileges？ Which two commands would you use to resolve this error？（） GRANT dba TO dbmgr；。 GRANT connect TO dbmgr；。 GRANT resource TO dbmgr；。 GRANT hs_admin_role TO dmbgr；。 GRANT manage scheduler TO dbmgr；。
确定总体施工顺序，优先安排工程量大、结构复杂、工期长的主体项目，配合施工的大型临时设施。工程量小、难度不大的辅助工程，作为平衡施工项目，穿插在主体工程间进行。
Examine the following command： SQL> ALTER TABLE booking SHRINK SPACE COMPACT； Which activity is performed when the preceding command is executed？（） The shrink operation touches every block in the BOOKING table。 The high-water mark （HWM） for the BOOKING table is shifted from its original position。 The progress of the shrink operation is saved in the bitmap blocks of the BOOKING table。 The data manipulation language （DML） triggers on the BOOKING table are executed because the shrink operation is internally handled by the INSERT/DELETE operatio。
瓶装毒性气体危险特性警示标志底色是（）色。 黄。 红。 绿。 白。
In Real Operations Automation， we have Domain Template and WebLogic Scripting Tool for provisioning and configuration respectively.
Which are the other two elements ？（）
