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搜题
【单选题】
下列不属于数字通信的优点的是( ).
A.
抗噪声(抗干扰)能力强
B.
可靠性高
C.
占用频带宽
D.
便于计算机处理信号
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举一反三
【判断题】Simple sentences are all short and complex sentences are all long.
A.
正确
B.
错误
【单选题】You are the administrator of a SQL Server 2000 computer. One of the databases on the server contains a table named complaints. This table is used to store information about customer complaints. The cu...
A.
Create an UPDATE trigger that sends an e-mail message.
B.
Create a stored procedure that sends an e-mail message. Use the stored procedures to make changes to the data.
C.
Create a user-defined function that sends an e-mail message. Use the function to make changes to the data.
D.
Create a rule that validates data entry. Bind the rule to the CompliantClosed column.
【判断题】Varied sentence length means simple sentences are used in between compound and complex sentences.
A.
正确
B.
错误
【判断题】离合器活塞上单向阀的作用是在离合器接合时使离合器接合更紧密。
A.
正确
B.
错误
【单选题】SQL Serve 2008运行的平台为( )。
A.
Windows平台
B.
UNIX平台
C.
Linux平台
D.
NetWare平台
【判断题】Varied sentence length means simple sentences are used in between compound and complex sentences.
A.
正确
B.
错误
【单选题】以下描述中有误的是()。
A.
Hibernate是封装了JDBC和ORM的持久化层解决方案
B.
Hibernate 中PO对象的三种状态是transient(瞬时状态)、persistent(持久化状态)和detached(托管状态、离线状态)
C.
实现ORM模式的仅有hibernate框架
D.
ORM即Object-Relationl Mapping,它的作用是在关系型数据库和对象之间作一个映射
【判断题】压缩空气供气主管应在车间上方设置为环形,以保证各处的压力相同且均衡稳定。
A.
正确
B.
错误
【单选题】You are the database administrator for an accounting company. You are installing SQL Server 2000 on a new Microsoft Windows 2000 Server computer. The computer will run two client/server database appli...
A.
Rerun the SQL Server Setup and specify the SQL_Latin1_General_CP437_BIN collation.
B.
Run the rebuildm utility and specify the SQL_Latin1_General_CP437_BIN collation.
C.
Use the ALTER DATABASE statement to specify the SQL_Latin1_General_CP437_BIN collation for the Financials database.
D.
Use the ALTER TABLE statement to specify the SQL_Latin1_General_CP437_BIN collation for each table in the Financials database.
【判断题】单作用式离合器间隙调整方法是用改变离合器拉杆长度或拧动分离杠杆调整螺母的方法,调整离合器的分离间隙;并用分离杠杆上的调整螺母,调整各间隙的一致性。
A.
正确
B.
错误
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