In which scenario, will you issue the following command?() RMAN> REPORT NEED BACKUP DAYS 7;
A. to configure RMAN to maintain backup information in the RMAN repository for seven days
B. to configure RMAN to maintain backup information in the control file for at least seven days
C. to display the list of files that have not been backed up for the last seven days
D. to display the list of files that must be backed up within seven day
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郭声琨部长在公安现役部队党的建设工作会议上指出,加强公安现役部队党的建设,()是关键。
A. 正、副书记
B. 领导干部和普通党员
C. 领导班子和领导干部
D. 广大党员
对于工作和生活中出现的危急病人,要尽量避免在现场对其进行急救,而应及时去医院救治。()
A. 正确
B. 错误
磁感应强度的大小等于与磁场方向()的单位长度的导体通以单位电流时在该点所受到的电磁力。
A. 平行
B. 垂直
在AutoCAD中()图层都以一个名称作为标识,并且有颜色、线型、线宽等各种特性和开、关、冻结等不同的状态