题目内容

下列关于农业税的说法正确的是()。

A. 农业税的纳税人是农业经济实体
B. 农业税以常年产量为计税依据
C. 实行地区差别比例税率
D. 农业税以实际产量为计税依据

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常见汽车制造厂的WMI编号为“LVH”表示的是()

A. 广州本田
B. 东风本田
C. 上海通用
D. 上海大众

()气瓶禁止不装减压器直接使用,禁止使用不合格的减压器。

A. 氧气
B. 乙炔
C. 各类
D. 六氟化硫

ou are using the flash recovery area (fast recovery area in 11g Release 2) to store backup related files in your database. After regular monitoring of space usage in the Mash recovery area. You realize that the flash recovery area is (jetting filled up very fast and it is running out of space. Your database flash recovery area is low on specie and you have no more room on disk. Proactively, which two options could you use to make more space available in the flash recovery()

A. Change the RMAN archived log deletion policy.
B. Use the RMAN CROSSCHECK command to reclaim the archived log space.
Change the RMAN retention policy to retain backups for a shorter period of time.
D. Use OS command to move files from the flash recovery area to some other location.

简述文书、公文和文件的三者之间的区别与联系及三者的概念起源。

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