Fires resulting from spontaneous combustion are usually caused by the improper disposal of（）...

第1题

[单选题] Cracks in the cylinders and cylinder covers may （） unequal heating.

A、result from B、result in C、give out D、given from

第2题

[单选题] To view the results of a manual SQL Tuning Advisor task, which steps should the DBA take?（）

A、From the Advisor Central home page, select the tuning task from the Advisor Tasks section. B、From Advisor Central, choose SQL Advisors, SQL Tuning Advisors, Manual Tuning Task Results. C、From Advisor Central, choose SQL Advisors, Manual SQL Tuning Advisors, Tuning Task Results. D、Either B or C

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第3题

[单选题] Fires involving combustible metals are classified as （）.

A、class "A" fires B、class "B" fires C、class "C" fires D、class "D" fires

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第4题

[单选题] Portable foam type fire extinguishers are most effective on（）.

A、mattress fires B、oil fires C、wood fires D、All of the above

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第5题

[] Observe the structure of the table employees: The table contains 8475 records. One of the employees wants to know the names of all employees of the company. For this, he fires the following query: SELECT * FROM EMPLOYEES ORDER BY emp_fname; Since the operation performed on executing the query cannot fit into memory, it requires disk space to complete the operation. Which of the following types of segments will Oracle allocate to complete the operation and to provide the required result?（） Observe the structure of the table employees: The table contains 8475 records. One of the employees wants to know the names of all employees of the company. For this, he fires the following query: SELECT * FROM EMPLOYEES ORDER BY emp_fname; Since the operation performed on executing t

A、A. Rollback segment B、B. Temporary segment C、C. Data segment D、D. Index segment

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第6题

[单选题] The database administrator of your company created a public synonym called HR for the HUMAN_RESOURCES table of the GENERAL schema, because many users frequently use this table. As a user of the database, you created a table called HR in your schema. What happens when you execute this query? SELECT * FROM HR; （）

A、You obtain the results retrieved from the public synonym HR created by the database administrator. B、You obtain the results retrieved from the HR table that belongs to your schema. C、You get an error message because you cannot retrieve from a table that has the same name as a public synonym. D、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a Cartesian product. E、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a FULL JOIN.

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第7题

[单选题] MIST is caused by（）.

A、forest fires B、smoke from industrial areas C、dust or sand storms D、water droplets with the relative humidity more than 95%

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第8题

[单选题] Haze is not caused by（）.

A、forest fires B、smoke from industrial areas C、dust or sand storms D、water droplets with the relative humidity more than 95%

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第9题

[单选题] The database administrator of your company created a public synonym called HR for the HUMAN_RESOURCES table of the GENERAL schema, because many users frequently use this table. As a user of the database, you created a table called HR in your schema. What happens when you execute this query?（）

A、You obtain the results retrieved from the public synonym HR created by the database administrator. B、You obtain the results retrieved from the HR table that belongs to your schema. C、You get an error message because you cannot retrieve from a table that has the same name as a public synonym. D、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a Cartesian product. E、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a FULL JOIN.

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Fires resulting from spontaneous combustion are usually caused by the improper disposal of（）.

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