题目内容

Which Man clsss properly represents the relationship "Man has a best friend who is a Dog"？（）

A. class Man extends Dog { }
B. class Man implements Dog { }
C. class Man { private BestFriend dog； }
D. class Man { private Dog bestFriend； }
E. class Man { private Dog

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发生事故后，汽车本身减轻人员伤亡和货物受损的性能称为（）。

A. 主动安全性
B. 被动安全性
C. 事故后安全性

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The direct handoff connection method to an Oracle9i Shared Server involves fewer messages than in previous releases of the multithreaded architecture. Which type of message has been eliminated？（）

A. The initial request from the client to the listener.
B. Messages between the dispatcher and the shared server background processes.
C. A redirect message from the listener to the client during client connections.
D. Round-trip messages between the listener and the shared server background processes.

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Given： What is the result？（）

A. 0，0，0
B. 150，60，0
Compilation fails.
D. 150，150，150

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The CURSOR_SHARING parameter is set to SIMILAR at the instance level and you issue these SELECT statements in the order shown below： SELECT * FROM employees WHERE department_id=50； SELECT * FROM employees WHERE department_id=70； There is an index on the DEPARTMENT ID column of the 1，000，000 row EMPLOYEES table. Ninety percent of the employees are part of the DEPARTMENT_ID 50. In which two scenarios will Oracle9i share the corresponding cursors for the two statements？（）

A
B
C
D

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Which Man clsss properly represents the relationship "Man has a best friend who is a Dog"？（）

A. class Man extends Dog { } B. class Man implements Dog { } C. class Man { private BestFriend dog； } D. class Man { private Dog bestFriend； } E. class Man { private Dog

发生事故后，汽车本身减轻人员伤亡和货物受损的性能称为（）。

The direct handoff connection method to an Oracle9i Shared Server involves fewer messages than in previous releases of the multithreaded architecture. Which type of message has been eliminated？（）

Given： What is the result？（）

A. class Man extends Dog { }
B. class Man implements Dog { }
C. class Man { private BestFriend dog； }
D. class Man { private Dog bestFriend； }
E. class Man { private Dog