柴油机负荷调节是通过改变()而进入气缸的空气量基本不变。
查看答案
通报的主送对象往往不是针对特定的组织和人员,而只是让一定范围的组织和人员知晓即可,因此,在文中不一定标明主送机关。
A. 正确
B. 错误
What is the correct order of the following commands if you wanted to restore datafile 4, which was accidentally removed from the file system?() a. sql ’alter database datafile 4 online’ b. restore datafile 4 c. recover datafile 4 d. sql ’alter database datafile 4 offline’ e. startup f. shutdown
A. a, c, b, d
B. d, b, c, a
C. f, d, b, c, a, e
D. c, a, b, d, f
E. a, b, d, e