The database is running in NOARCHIVELOG mode. A data file is lost. Which two are valid options for recover?()
A. Restore the data file and perform incomplete recovery.
B. Restore the data file and perform point-in-time recover.
C. Drop the tablespace and lose all data in the tablespace.
D. Restore the database and lose all data since the last backup.
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汽油发动机最大扭矩与其标定工况下扭矩的(),则扭矩储备系数越大,汽车对于外界阻力变化的适应能力越强。
A. 总和越大
B. 总和越小
C. 差值越大
D. 差值越小
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