沙漠化指原有植物覆盖的土地变成不毛之地的自然灾害现象。
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焊接车间焊工作业面积不应该小于4平方米,地面应基本干燥。
A. 正确
B. 错误
保证期间,被保证人要求修改保函的,已收取的保证费用可酌情退还。
A. 正确
B. 错误
《中华人民共和国宪法》规定一切国家机关和武装力量、各政党和各社会团体、各企业事业组织,都必须以什么为根本的活动准则?
Your database is in ARCHIVELOG mode. You have two online redo log groups, each of which contains one redo member. When you attempt to start the database, you receive the following errors: ORA-00313: open failed for members of log group 1 of thread 1 ORA-00312: online log 1 thread 1: 'D:\REDO01.LOG' You discover that the online redo log file of the current redo group is corrupted. Which statement should you use to resolve this issue?()
ALTER DATABASE DROP LOGFILE GROUP 1;
B. ALTER DATABASE CLEAR LOGFILE GROUP 1;
C. ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1;
D. ALTER DATABASE DROP LOGFILE MEMBER 'D:\REDO01.LOG