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【判断题】
在照明和电加热电路中,熔断器既可以作过载保护,也可以作短路保护
A.
正确
B.
错误
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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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【简答题】品种比较试验一般采用 设计,以 为对照。
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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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【单选题】根据抽样调查得知：甲企业一等品产品比重为30%，乙企业一等品比重为50%，一等品产品比重的抽样平均误差为 （ ）
A.
甲企业大
B.
两企业相同
C.
乙企业大
D.
无法判断
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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】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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相关题目：
【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
查看完整题目与答案
【简答题】简述提高酶产量的措施.
查看完整题目与答案
【简答题】品种比较试验一般采用 设计,以 为对照。
查看完整题目与答案
【简答题】简述提高酶产量的措施。
查看完整题目与答案
【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
查看完整题目与答案
【简答题】提高酶产量的措施有哪些？
查看完整题目与答案
【单选题】根据抽样调查得知：甲企业一等品产品比重为30%，乙企业一等品比重为50%，一等品产品比重的抽样平均误差为 （ ）
A.
甲企业大
B.
两企业相同
C.
乙企业大
D.
无法判断
查看完整题目与答案
【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.
查看完整题目与答案
【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.
查看完整题目与答案
【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.
查看完整题目与答案