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【单选题】
稳压二极管又称( ),简称稳压管,它是一种用特殊工艺制造的( )硅半导体二极管。
A.
二极管，面接触型
B.
反向二极管，点接触型
C.
二极管，平面型
D.
反向二极管，面接触型
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【单选题】Math.random 函数生成随机数的范围是()。
A.
大于等于0小于等于1
B.
大于等于0小于1
C.
大于0小于等于1
D.
大于0小于1
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【简答题】简述提高酶产量的措施。
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【单选题】Math.random函数生成随机数的范围是( )
A.
1至100
B.
0至1
C.
1至10
D.
1至9
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【简答题】提高酶产量的措施有哪些？
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【多选题】You use the segment advisor to help determine objects for which space may be reclaimed. Which three statements are true about the advisor given by the segment advisor?（）
A.
It may advise the use of online table redefinition for tables in dictionary managed tablespace.
B.
It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows.
C.
It may advise the use of online table redefinition for tables in locally managed tablespaces
D.
It will detect and advise about chained rows.
E.
It may advise the use of segment shrink for free list managed tables.
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【单选题】Math.random()函数生成的随机数范围是( )。
A.
1至100
B.
1至1970年1月1日起算的毫秒数
C.
0至1
D.
1至10
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【单选题】Which statement most accurately describes the implementation of a SQL Access Advisor recommendation?（）
A.
SQL Access Advisor recommendations are automatically implemented.
B.
Individual SQL Access Advisor recommendations can be scheduled for implementation.
C.
All SQL Access Advisor recommendations for a specific task must be implemented at the same time.
D.
SQL Access Advisor recommendations are automatically scheduled for implementation during the maintenance window.
E.
None of the above.
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【多选题】Which two statements are true regarding the SQL Repair Advisor?（）
A.
The SQL Repair Advisor can be invoked to tune the performance of the regressed SQL statements.
B.
The SQL Repair Advisor can be invoked even when the incident is not active for a SQL statement crash.
C.
The SQL Repair Advisor is invoked by the Health Monitor when it encounters the problematic SQL statement.
D.
The DBA can invoke the SQL Repair Advisor when he or she receives an alert generated when a SQL statement crashes and an incident is created in the ADR.
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【单选题】Math.random 函数生成随机数的范围是()。
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【多选题】You use the segment advisor to help determine objects for which space may be reclaimed. Which three statements are true about the advisor given by the segment advisor?（）
A.
It may advise the use of online table redefinition for tables in dictionary managed tablespace.
B.
It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows.
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It may advise the use of online table redefinition for tables in locally managed tablespaces
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【单选题】Math.random()函数生成的随机数范围是( )。
A.
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C.
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D.
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【单选题】Which statement most accurately describes the implementation of a SQL Access Advisor recommendation?（）
A.
SQL Access Advisor recommendations are automatically implemented.
B.
Individual SQL Access Advisor recommendations can be scheduled for implementation.
C.
All SQL Access Advisor recommendations for a specific task must be implemented at the same time.
D.
SQL Access Advisor recommendations are automatically scheduled for implementation during the maintenance window.
E.
None of the above.
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【多选题】Which two statements are true regarding the SQL Repair Advisor?（）
A.
The SQL Repair Advisor can be invoked to tune the performance of the regressed SQL statements.
B.
The SQL Repair Advisor can be invoked even when the incident is not active for a SQL statement crash.
C.
The SQL Repair Advisor is invoked by the Health Monitor when it encounters the problematic SQL statement.
D.
The DBA can invoke the SQL Repair Advisor when he or she receives an alert generated when a SQL statement crashes and an incident is created in the ADR.
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