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【判断题】
具有不对称电势是膜电极的共同特性。不同类型膜电极的不对称电势的值不同，但所有同类型膜电极(如不同厂家生产的膜电极)，不对称电位的值相同。(    )
A.
正确
B.
错误
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参考答案：
举一反三
【单选题】Building a monthly budget is the first step. 此句中 ,budget 是什么意思?
A.
赤字
B.
预算
C.
结算
D.
欠款
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【多选题】An RMAN backup job fails， displaying the following error：  ORA-19809： limit exceeded for recovery files  Your analysis shows that the Flash Recovery area is full.  Which two actions could you take to ...
A.
take the backup of the flash recovery area less frequently
B.
increase the value of the UNDO_RETENTION initialization parameter
C.
change the value of the WORKAREA_SIZE_POLICY initialization parameter to AUTO
D.
change the backup retention policy to retain the backups for a smaller period of time
E.
increase the value of the DB_RECOVERY_FILE_DEST_SIZE initialization parameter
F.
increase the value of the CONTROL_FILE_RECORD_KEEP_TIME initialization parameter
查看完整题目与答案
【单选题】An RMAN backup job fails， displaying the following error message：  ORA/x7f19809： limit exceeded for recovery files  Your analysis shows that the Flash Recovery area is full. What would you do to resol...
A.
increase the value of UNDO_RETENTION
B.
change the value of WORKAREA_SIZE_POLICY to AUTO
C.
increase the value of DB_RECOVERY_FILE_DEST_SIZE
D.
increase the value of CONTROL_FILE_RECORD_KEEP_TIME
查看完整题目与答案
【多选题】An RMAN backup job fails， displaying the following error：  ORA/x7f19809： limit exceeded for recovery files  Your analysis shows that the Flash Recovery area is full. Which two actions could you take t...
A.
take the backup of the flash recovery area less frequently
B.
increase the value of the UNDO_RETENTION initialization parameter
C.
change the value of the WORKAREA_SIZE_POLICY initialization parameter to AUTO
D.
change the backup retention policy to retain the backups for a smaller period of time
E.
increase the value of the DB_RECOVERY_FILE_DEST_SIZE initialization parameter
F.
increase the value of the CONTROL_FILE_RECORD_KEEP_TIME initialization parameter
查看完整题目与答案
【单选题】I f the tank volume is 1 2 0 m 3 and the flow rate is 2 m 3 /min, how long is the retention time ?
A.
3 0min
B.
40min
C.
50min
D.
60min
查看完整题目与答案
【单选题】阶跃型光纤中导模数量为( ) , 渐变型光纤中导模数量为 v2/4
A.
v2
B.
v2/2
C.
v2/6
D.
v2/8
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【多选题】You need to ensure that the database users should be able to use the various flashback query features in order to go back in time by four hours. What would you do to achieve this?（）
A.
set SQL_TRACE=True
B.
set UNDO_RETENTION=14400
C.
set FAST_START_MTTR_TARGET=240
D.
set LOG_CHECKPOINT_INTERVAL=240
E.
set DB_FLASHBACK_RETENTION_TARGET=14400
F.
set the RETENTION GUARANTEE clause for the undo tablespace
查看完整题目与答案
【判断题】环境保护信息平台已经与人人网进行合作。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】Following the Harvard scandal, Mary Miller, the former dean of students at Yale, made an impassioned appeal to her school's professors to refrain from takehome exams. “Students risk health and well be...
A.
Elderly students find it hard to keep up with the rapid changes in education.
B.
Some believe take-home exams may affect students' performance in other courses.
C.
Certain professors believe in-class exams are ultimately more helpful to students.
D.
In-class exams are believed to discourage cheating in exams.
E.
The author was happy to learn she could do some exams at home.
F.
Students who put off their work until the last moment often find the exams more difficult than they actually are.
G.
Different students may prefer different types of exams.
查看完整题目与答案
【简答题】文献研究的基本步骤包括 、 、 三个环节。
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相关题目：
【单选题】Building a monthly budget is the first step. 此句中 ,budget 是什么意思?
A.
赤字
B.
预算
C.
结算
D.
欠款
查看完整题目与答案
【多选题】An RMAN backup job fails， displaying the following error：  ORA-19809： limit exceeded for recovery files  Your analysis shows that the Flash Recovery area is full.  Which two actions could you take to ...
A.
take the backup of the flash recovery area less frequently
B.
increase the value of the UNDO_RETENTION initialization parameter
C.
change the value of the WORKAREA_SIZE_POLICY initialization parameter to AUTO
D.
change the backup retention policy to retain the backups for a smaller period of time
E.
increase the value of the DB_RECOVERY_FILE_DEST_SIZE initialization parameter
F.
increase the value of the CONTROL_FILE_RECORD_KEEP_TIME initialization parameter
查看完整题目与答案
【单选题】An RMAN backup job fails， displaying the following error message：  ORA/x7f19809： limit exceeded for recovery files  Your analysis shows that the Flash Recovery area is full. What would you do to resol...
A.
increase the value of UNDO_RETENTION
B.
change the value of WORKAREA_SIZE_POLICY to AUTO
C.
increase the value of DB_RECOVERY_FILE_DEST_SIZE
D.
increase the value of CONTROL_FILE_RECORD_KEEP_TIME
查看完整题目与答案
【多选题】An RMAN backup job fails， displaying the following error：  ORA/x7f19809： limit exceeded for recovery files  Your analysis shows that the Flash Recovery area is full. Which two actions could you take t...
A.
take the backup of the flash recovery area less frequently
B.
increase the value of the UNDO_RETENTION initialization parameter
C.
change the value of the WORKAREA_SIZE_POLICY initialization parameter to AUTO
D.
change the backup retention policy to retain the backups for a smaller period of time
E.
increase the value of the DB_RECOVERY_FILE_DEST_SIZE initialization parameter
F.
increase the value of the CONTROL_FILE_RECORD_KEEP_TIME initialization parameter
查看完整题目与答案
【单选题】I f the tank volume is 1 2 0 m 3 and the flow rate is 2 m 3 /min, how long is the retention time ?
A.
3 0min
B.
40min
C.
50min
D.
60min
查看完整题目与答案
【单选题】阶跃型光纤中导模数量为( ) , 渐变型光纤中导模数量为 v2/4
A.
v2
B.
v2/2
C.
v2/6
D.
v2/8
查看完整题目与答案
【多选题】You need to ensure that the database users should be able to use the various flashback query features in order to go back in time by four hours. What would you do to achieve this?（）
A.
set SQL_TRACE=True
B.
set UNDO_RETENTION=14400
C.
set FAST_START_MTTR_TARGET=240
D.
set LOG_CHECKPOINT_INTERVAL=240
E.
set DB_FLASHBACK_RETENTION_TARGET=14400
F.
set the RETENTION GUARANTEE clause for the undo tablespace
查看完整题目与答案
【判断题】环境保护信息平台已经与人人网进行合作。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】Following the Harvard scandal, Mary Miller, the former dean of students at Yale, made an impassioned appeal to her school's professors to refrain from takehome exams. “Students risk health and well be...
A.
Elderly students find it hard to keep up with the rapid changes in education.
B.
Some believe take-home exams may affect students' performance in other courses.
C.
Certain professors believe in-class exams are ultimately more helpful to students.
D.
In-class exams are believed to discourage cheating in exams.
E.
The author was happy to learn she could do some exams at home.
F.
Students who put off their work until the last moment often find the exams more difficult than they actually are.
G.
Different students may prefer different types of exams.
查看完整题目与答案
【简答题】文献研究的基本步骤包括 、 、 三个环节。
查看完整题目与答案
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