题目内容

铁路用地应按地界线上埋设(),地界桩制作和埋设应符合有关标准。

A. 地界标
B. 管界桩
C. 地界桩

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下面()不属于CNC装置的基本功能。

A. 主轴功能
B. 进给功能
C. 准备功能
D. 图形显示功能

Which method would you use to undo the changes made by a particular transaction without affecting the changes made by other transactions?()

A. point-in-time recovery
B. execute the ROLLBACK command with transaction number
C. flashback the database to before the transaction was committed
D. determine all the necessary undo SQL statements from FLASHBACK_TRANSACTION_QUERY and use them for recovery

Precondition字段是在哪条消息中携带的()。

A. INVITE Request
B. 100Trying
C. 183response
D. 200OK

《蓝色扶手椅中的小女孩》和《穿黑衣的妇女》是19世纪美国画家()的绘画作品。

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