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创办企业失败的原因主要有:
A.
没有进行充分的市场调查
B.
选择了自己不熟、不懂、不精的创业项目
C.
开办企业之初没有计划，不知道自己的创业项目到什么时间要多少钱
D.
贪大求新、超越了自己的经济和管理承受能力
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参考答案：
举一反三
【判断题】An LR parser will detect an error when it consults the parsing action table and finds an error entry. All empty entries in the action table are error entries. Errors are never detected by consulting t...
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following database objects can be used to raise an error if a table is updated?（）
A.
Package
B.
Trigger
C.
Stored Procedure
D.
Informational Constraint
查看完整题目与答案
【单选题】You work as a database administrator for Certkiller .com. Because of space constraints， you decided to manually shrink the table. You executed the ALTER TABLE ....SHRINK SPACE statement to shrink the ...
A.
The table is partitioned
B.
The table name is wrong.
C.
It is an index-Organized table （IOT）
D.
The table is stored in locally managedtablespace.
E.
The table is stored in atablespacewhere segment space is managed manually.
查看完整题目与答案
【单选题】You work as a database administrator for Supportcenter.cn. Because of space constraints， you decided to manually shrink the table. You executed the ALTER TABLE ....SHRINK SPACE statement to shrink the...
A.
The table is partitioned
B.
The table name is wrong.
C.
It is an index-Organized table （IOT）
D.
The table is stored in locally managedtablespace.
E.
The table is stored in atablespacewhere segment space is managed manually.
查看完整题目与答案
【单选题】When adjusting a magnetic compass for error，a deviation table should be made（）.
A.
before correcting for any deviation
B.
after correcting for variation
C.
after adjusting the fore-and-aft and athwartships permanent magnets
D.
before the quadrantal correctors are placed on the compass
查看完整题目与答案
【简答题】3mol 的理想气体开始时处在压强为 6atm 、温度为 500K 的平衡态。经过一个等温过程,压强变为 3atm 。该气体在此等温过程中吸收的热量为 ______ × 10 3 J 。
查看完整题目与答案
【单选题】You execute the following command in your Certkiller .com production database to change the width of the CUST_NAME column of the CUSTOMERS table： ALTER TABLE customers  MODIFY （cust_nameVARCHAR2 （40））...
A.
The database instance is not available.
B.
The ALTER TABLE command does not have WAIT option
C.
The table or a row in the table is currently locked by another user session.
D.
The database instance is busy processing other user sessions commands.
E.
The CUSTOMERS table has no long running query active at the time when this request is made.
F.
The server process executing the ALTER TABLE command is busy with another command execution
查看完整题目与答案
【简答题】3mol 的理想气体开始时处在压强为 6atm 、温度为 500K 的平衡态。经过一个等温过程,压强变为 3atm 。该气体在此等温过程中吸收的热量为 ______ × 10 3 J 。
查看完整题目与答案
【判断题】银行卡比较适合B2C以及小额的B2B电子商务。
A.
正确
B.
错误
查看完整题目与答案
【简答题】const int hash_size = 997; // a prime number of appropriate size class Hash_table { public : Hash_table(); void clear(); Error_code insert( const Record &new_entry); Error_code retrieve( const Key &t...
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相关题目：
【判断题】An LR parser will detect an error when it consults the parsing action table and finds an error entry. All empty entries in the action table are error entries. Errors are never detected by consulting t...
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following database objects can be used to raise an error if a table is updated?（）
A.
Package
B.
Trigger
C.
Stored Procedure
D.
Informational Constraint
查看完整题目与答案
【单选题】You work as a database administrator for Certkiller .com. Because of space constraints， you decided to manually shrink the table. You executed the ALTER TABLE ....SHRINK SPACE statement to shrink the ...
A.
The table is partitioned
B.
The table name is wrong.
C.
It is an index-Organized table （IOT）
D.
The table is stored in locally managedtablespace.
E.
The table is stored in atablespacewhere segment space is managed manually.
查看完整题目与答案
【单选题】You work as a database administrator for Supportcenter.cn. Because of space constraints， you decided to manually shrink the table. You executed the ALTER TABLE ....SHRINK SPACE statement to shrink the...
A.
The table is partitioned
B.
The table name is wrong.
C.
It is an index-Organized table （IOT）
D.
The table is stored in locally managedtablespace.
E.
The table is stored in atablespacewhere segment space is managed manually.
查看完整题目与答案
【单选题】When adjusting a magnetic compass for error，a deviation table should be made（）.
A.
before correcting for any deviation
B.
after correcting for variation
C.
after adjusting the fore-and-aft and athwartships permanent magnets
D.
before the quadrantal correctors are placed on the compass
查看完整题目与答案
【简答题】3mol 的理想气体开始时处在压强为 6atm 、温度为 500K 的平衡态。经过一个等温过程,压强变为 3atm 。该气体在此等温过程中吸收的热量为 ______ × 10 3 J 。
查看完整题目与答案
【单选题】You execute the following command in your Certkiller .com production database to change the width of the CUST_NAME column of the CUSTOMERS table： ALTER TABLE customers  MODIFY （cust_nameVARCHAR2 （40））...
A.
The database instance is not available.
B.
The ALTER TABLE command does not have WAIT option
C.
The table or a row in the table is currently locked by another user session.
D.
The database instance is busy processing other user sessions commands.
E.
The CUSTOMERS table has no long running query active at the time when this request is made.
F.
The server process executing the ALTER TABLE command is busy with another command execution
查看完整题目与答案
【简答题】3mol 的理想气体开始时处在压强为 6atm 、温度为 500K 的平衡态。经过一个等温过程,压强变为 3atm 。该气体在此等温过程中吸收的热量为 ______ × 10 3 J 。
查看完整题目与答案
【判断题】银行卡比较适合B2C以及小额的B2B电子商务。
A.
正确
B.
错误
查看完整题目与答案
【简答题】const int hash_size = 997; // a prime number of appropriate size class Hash_table { public : Hash_table(); void clear(); Error_code insert( const Record &new_entry); Error_code retrieve( const Key &t...
查看完整题目与答案
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