为了尽可能多的减少拆迁面积,路堤部分优先采用()
A. 路堑墙
B. 路堤墙
C. 山坡挡土墙
D. 路肩墙
将三相对称负载在同一电源上作星形连接时,负载取用的功率是作三角形连接的()。
A. 3倍
B. 1/3倍
C. 1倍
D. 1/2倍
公安机关交通管理部门可以根据道路交通状况和机动车排气污染防治需要,对机动车采取限制区域、限制时间行驶的交通管理措施。具体办法由公安机关交通管理部门会同环境保护主管部门制定,报同级人民政府批准后实施。
A. 正确
B. 错误
Your database is configured in NOARCHIVELOG mode. All the control files have been lost due to a hard disk failure but the data files are not lost. You have the closed whole database backup available to you. Which two statements are true in this scenario?()
A. The instance aborts.
B. The database cannot be recovered.
C. The database can be recovered by restoring the control files from the backup.
D. The database remains opened and you have to shut it down with the ABORT option.
E. The database can be restored till the point of the last closed whole database backup.