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【单选题】

In an automation system, the effect of a control action sensed by a controller is known as （）

A、command input

B、set point signal

C、output

D、feedback

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更多“In an automation system, the effect of a control action sensed by a controller is known as （）”相关的问题
第1题
[单选题] The Database Resource Manager is automatically enabled in the maintenance window that runs the Automated Maintenance Task. What is the reason for this?（）

A、to prevent the creation of an excessive number of scheduler job classes  B、to allow the Automated Maintenance Tasks to use system resources without any restriction  C、to allow resource sharing only among the Automated Maintenance Tasks in the maintenance window  D、to prevent the Automated Maintenance Tasks from consuming excessive amounts of system resources  

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第2题
[多选题] Which two statements are true with respect to the maintenance window? （）

A、A DBA can enable or disable an individual task in all maintenance windows.  B、A DBA cannot change the duration of the maintenance window after it is created.  C、In case of a long maintenance window, all Automated Maintenance Tasks are restarted every four hours.  D、A DBA can control the percentage of the resource allocated to the Automated Maintenance Tasks in each window.  

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第3题
[单选题] You need to perform an automated installation of an Exchange Server 2010 server.Which Command should you include in your script？（）

A、setup.exe  B、setup.com  C、msiexec.exe  D、lpsetupui.exe  

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第4题
[单选题] You need to perform an automated installation of an Exchange Server 2010 server. Which command should you include in your script（）？

A、setup.exe  B、setup.com  C、msiexec.exe  D、lpsetupui.exe  

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第5题
[单选题] he DBA is about to enable auditing on the Oracle database in an attempt to discover some suspicious activity. Audit trail information is stored in which of the following database object names?（）

A、SYS.SOURCE$   B、SYS.AUD$   C、DBA_SOURCE   D、DBA_AUDIT_TRAIL  

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第6题
[单选题] Which of the listed failures, occurring in an automated diesel generator system, should cause an audible alarm at the engine room control station?（）

A、Low cooling water outlet temperature  B、High lube oil pressure  C、Low lube oil temperature  D、Low starting air pressure  

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第7题
[单选题] 利用消息通信，进程可以将具有一定格式的消息发送给任意进程。UNIXSYSTEMV为消息通信提供四个系统调用，涉及到的头文件有sys/types.h、sys/ipc.h和（）

A、stdout.h  B、sys/socket.h  C、sys/msg.h  D、netinet/in.h  

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第8题
[单选题] A base operating system has just been installed, successfully rebooted, and the user is now logged in as root. The user wants the server software bundle installed, but has additional software that must be installed with the bundle. Which of the following procedures should be performed to complete the installation?（）

A、Add the software to /usr/sys/inst.images  B、Update the bundle file in /usr/sys/inst.images  C、Install the bundle filelists and run update all  D、Add the software to the bundle file in /usr/sys/inst.data/sys_bundles  

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第9题
[单选题] The Database Resource Manager is automatically enabled in the maintenance window that runs the Automated Maintenance Task. What is the reason for this？（）  

A、 to prevent the creation of an excessive number of scheduler job classes  B、 to allow the Automated Maintenance Tasks to use system resources without any restriction  C、 to allow resource sharing only among the Automated Maintenance Tasks in the maintenance window  D、 to prevent the Automated Maintenance Tasks from consuming excessive amounts of system resources  

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