题目内容

Which of the following is a characteristic of a sequence?（）

A sequence will never generate duplicate values
B. The MAXVALUE of a sequence can be equal to the MINVALUE
C. It is not possible to create a sequence that generates a constant since the INCREMENT value must be greater than zero
D. When a sequence cycles back to either the MAXVALUE or MINVALUE, it will always be equal to the specified value of either of these two boundarie

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（）名茶素有“色绿、香郁、味甘、形美”之誉。

A. 庐山云雾茶
B. 西湖龙井
C. 白毫乌龙茶
D. 凤凰单枞

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tony wants to create a duplicate of the video application. He wants to keep a version of the data on the same server as the production application but does not want any new documents or documents modifications to be replicated into his new database once he creates it. Which one of the following should tony do to create his archive?（）

A. create a new copy of the database
B. create a replica of the database
C. Use the windows explorer to create a copy of the database file.
D. Create a replica copy of the database and disable replication on the database file.

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简述R2000AP-II设备配置为AP模式的基本配置。

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行、场偏转线圈中的偏转磁场是由（）流过形成的。

A. 脉冲电流
B. 正弦波电流
C. 锯齿波电流
D. 三角波电流

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