Restrictions occurring in the small orifices(孔) of pneumatic control system components can be caused by ______.A.moisture in the compressed air supplyB.excessive dryness in the compressed air supplyC.pressure surging in the compressed air receiverD.insuff

题目

Restrictions occurring in the small orifices(孔) of pneumatic control system components can be caused by ______.

A.moisture in the compressed air supply

B.excessive dryness in the compressed air supply

C.pressure surging in the compressed air receiver

D.insufficient lubrication of the system components

相似考题

1.●The (75) has several major components，including the system kernel,a memory management system,the file system manager,device drivers，and the system libraries.(75) A．applicationB．information systemC．networkD．operating system

2.The(74)has several major components, including the system kernel, a memory management system, the file system manager, device drivers, and the system libraries.A．applicationB．information systemC．networkD．operating system

3.The ______ has several major components, including the system kernel, a memory management system, the file system manager, device drivers, and the system libraries.A．applicationB．information systemC．networkD．operating system

4.______ is a set of specifications and software that allow small programs or software components to work together.A．ActiveXB．XMLC．HTMLD．DBMS

更多“Restrictions occurring in the small orifices(孔) of pneumatic control system components ca ”相关问题

  • 第1题：

    In the fields of physical security and information security, access control is the selective restriction of access to a place or other resource. The act of accessing may mean consuming, entering, or using. Permission to access a resource is called authorization （授权）．
    An access control mechanism （71） between a user （or a process executing on behalf of a user） and system resources, such as applications, operating systems, firewalls, routers, files, and databases. The system must first authenticate（验证）a user seeking access. Typically the authentication function determines whether the user is （72） to access the system at all. Then the access control function determines if the specific requested access by this user is permitted. A security administrator maintains an authorization database that specifies what type of access to which resources is allowed for this user. The access control function consults this database to determine whether to（73）access. An auditing function monitors and keeps a record of user accesses to system resources.
    In practice, a number of（74）may cooperatively share the access control function. All operating systems have at least a rudimentary（基本的）, and in many cases a quite robust, access control component. Add-on security packages can add to the（75）access control capabilities of the OS. Particular applications or utilities, such as a database management system, also incorporate access control functions. External devices, such as firewalls, can also provide access control services.

    A.components
    B.users
    C.mechanisms
    D.algorithms

    答案：B
    解析：
    在物理安全和信息安全领域，访问控制是对一个地方或其他资源的访问限制。访问的行为可能意味着消费、输入或使用。允许访问资源被称为授权。
    访问控制机制连接用户（代表用户执行的进程）和系统资源（如应用程序、操作系统、防火墙、路由器、文件和数据库）之间的连接。系统必须首先对用户进行身份验证。通常，身份验证功能决定用户是否被允许访问系统。然后，访问控制功能决定是否允许该用户指定的访问权限。安全管理员维护一个授权数据库，该数据库指定允许该用户访问哪些资源的类型。访问控制函数咨询此数据库以确定是否授予访问权。审计功能监视并保存用户访问系统资源的记录。
    在实践中，一些用户可以合作共享访问控制函数。所有操作系统都至少有一个基本的，而且在许多情况下是一个相当健壮的访问控制组件。附加安全包可以添加到操作系统的自动访问控制功能。特定的应用程序或实用程序，如数据库管理系统，也包括访问控制功能。外部设备，如防火墙，也可以提供访问控制服务。

  • 第2题：

    The objective of（ 请作答此空 ）is to determine what parts of the application software will be assigned to what hardware. The major software components of the system being developed have to be identified and then allocated to the various hardware components on which the system will operate. All software systems can be divided into four basic functions. The first is（）.Most information systems require data to be stored and retrieved, whether a small file,such as a memo produced by a word processor, or a large database, such as one that stores an organization's accounting records.The second function is the（）,the processing required to access data, which often means database queries in Structured Query Language. The third function is the （）,which is the logic documented in the DFDs, use cases,and functional requirements.The fourth function is the presentation logic,the display of information to the user and the acceptance of the user's commands.The three primary hardware components of a system are （）.


    A.architecture design
    B. modular design
    C. physical design
    D.distribution design

    答案：A
    解析：
    （请作答此空 ）的目标是确定应用软件的哪些部分将分配到何种硬件。识别出正在开发系统的主要软件构件并分配到系统将要运行的硬件构件。所有软件系统可分为四项基本功能。第一项是（）。大多数信息系统需要数据进行存储并检索，不论是一个小文件，比如一个字处理器产生的一个备忘录，还是一个大型数据库，比如存储一个企业会计记录的数据库。第二项功能是（），处理过程需要访问数据，这通常是指用SQL进行数据库查询。第三项功能是（），这些逻辑通过数据流图，用例和功能需求来记录。第四项功能是表示逻辑，给用户显示信息并接收用户命令。一个系统的三类主要硬件构件是（）。A.架构设计 B.模块化设计 C.物理设计 D.分布式设计

  • 第3题：

    pany is deploying a Cisco autonomous WLAN solution in their network.  Which three  components are included in this solution？（）

    • A、 Wireless Domain Services （WDS）
    • B、 Access Control Server （ACS）
    • C、 Lightweight Access Point Protocol （LWAPP）
    • D、 Wireless LAN solution Engine （WLSE）
    • E、 Wireless Services Module （WISM）
    • F、 Wireless Control System （WCS）

    正确答案:A,B,D

  • 第4题：

    A customer would like to see the components needed to perform an upgrade on their DS5100system and get a list price of the cost. What tool can the storage specialist use to generate thisdocument？（）

    • A、eConfig
    • B、IBM Blue Horizon
    • C、Standalone Solution Configuration Tool （SSCT）
    • D、Configuration Management Version Control （CMVC）

    正确答案:A

  • 第5题：

    You are creating a custom control. The UI of the control must contain several text boxes and two buttons. The control must be available in the global assembly cache for reuse across multiple Web applications. You need to achieve this functionality by using the minimum amount of code. What should you do? （）

    • A、Create a control that derives from System.Web.UI.Control.
    • B、Create a control that derives from System.Web.UI.WebControls.CompositeControl.
    • C、Create a control that derives from System.Web.UI.WebControls.WebControl.
    • D、Create a control that derives from System.Web.UI.UserControl.

    正确答案:B

  • 第6题：

    单选题
    Restrictions occurring in the small orifices of pneumatic control system components can be used by （）
    A

    moisture in the compressed air supply

    B

    excessive dryness in the compressed air supply

    C

    pressure surging in the compressed air receiver

    D

    insufficient lubrication of the system components


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    The two most common gases used in pneumatic system are （）
    A

    compressed air and nitrogen

    B

    helium and nitrogen

    C

    oxygen and hydrogen

    D

    oxygen and acetylene


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    In a pneumatic automation system, a unit producing a signal to govern the position of the controller of the measured variable, relative to the value of the measured variable, is said to have（）.
    A

    reset action

    B

    proportional action

    C

    two position action

    D

    rate action


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Which Cisco product is a software component that blocks unwanted connections and provides other gateway security functions for small business?（）
    A

    Cisco Internetwork Operating System (IOS) Firewall

    B

    Cisco Secure Access Control Server (ACS)

    C

    Cisco Firewall Services Module (FWSM)

    D

    Cisco Private Internet Exchange (PIX) Firewall


    正确答案： B
    解析： 暂无解析

  • 第10题：

    多选题
    What are the components of the JTAPI Subsystem?（）
    A

    provider

    B

    CTI ports

    C

    call control groups

    D

    CMT Dialog Control Group

    E

    trigger

    F

    RM provider


    正确答案： B,D
    解析： 暂无解析

  • 第11题：

    多选题
    pany is deploying a Cisco autonomous WLAN solution in their network.  Which three  components are included in this solution？（）
    A

    Wireless Domain Services （WDS）

    B

    Access Control Server （ACS）

    C

    Lightweight Access Point Protocol （LWAPP）

    D

    Wireless LAN solution Engine （WLSE）

    E

    Wireless Services Module （WISM）

    F

    Wireless Control System （WCS）


    正确答案： C,F
    解析： 暂无解析

  • 第12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


    正确答案： A
    解析： 暂无解析

  • 第13题：

    The objective of (71) is to determine what parts of the application software will be assigned to what hardware. The major software components of the system being developed have to be identified and then allocated to the various hardware components on which the system will operate. All software systems can be divided into four basic functions. The first is (72). Most information systems require data to be stored and retrieved, whether a small file, such as a memo produced by a word processor, or a large database, such as one that stores an organization's accounting records. The second function is the (73), the processing required to access data, which often means database queries in Structured Query Language. The third function is the (请作答此空), which is the logic documented in the DFDs, use cases, and functional requirements. The fourth function is the presentation logic, the display of information to the user and the acceptance of the user's commands. The three primary hardware components of a system are (75).


    A. system requirements
    B. system architecture
    C.application logic
    D.application program

    答案：C
    解析：
    架构设计的目标是确定应用软件的哪些部分将被分配到何种硬件。识别出正在开发系统的主要软件构件并分配到系统将要运行的硬件构件。所有软件系统可分为四项基本功能。首项是数据存储。大多数信息系统需要数据进行存储并检索，无论是一个小文件，比如一个字处理器产生的一个备忘录，还是一个大型数据库，比如存储一个企业会计记录的数据库。第二项功能是数据访问逻辑，处理过程需要访问数据，这通常是指用SQL进行数据库查询。第三项功能是应用程序逻辑，这些逻辑通过数据流图，用例和功能需求来记录。第四项功能是表示逻辑，给用户显示信息并接收用户命令。一个系统的三类主要硬件构件是客户机、服务器和网络。

  • 第14题：

    The objective of（）is to determine what parts of the application software will be assigned to what hardware. The major software components of the system being developed have to be identified and then allocated to the various hardware components on which the system will operate. All software systems can be divided into four basic functions. The first is（）.Most information systems require data to be stored and retrieved, whether a small file,such as a memo produced by a word processor, or a large database, such as one that stores an organization's accounting records.The second function is the（）,the processing required to access data, which often means database queries in Structured Query Language. The third function is the（请作答此空 ）,which is the logic documented in the DFDs, use cases,and functional requirements.The fourth function is the presentation logic,the display of information to the user and the acceptance of the user's commands.The three primary hardware components of a system are （）.


    A. system requirements
    B. system architecture
    C.application logic
    D.application program

    答案：C
    解析：
    （）的目标是确定应用软件的哪些部分将分配到何种硬件。识别出正在开发系统的主要软件构件并分配到系统将要运行的硬件构件。所有软件系统可分为四项基本功能。第一项是（）。大多数信息系统需要数据进行存储并检索，不论是一个小文件，比如一个字处理器产生的一个备忘录，还是一个大型数据库，比如存储一个企业会计记录的数据库。第二项功能是（），处理过程需要访问数据，这通常是指用SQL进行数据库查询。第三项功能是（请作答此空 ），这些逻辑通过数据流图，用例和功能需求来记录。第四项功能是表示逻辑，给用户显示信息并接收用户命令。一个系统的三类主要硬件构件是（）。A.系统需求 B.系统架构 C.应用程序逻辑 D.应用程序

  • 第15题：

    What are the components of the JTAPI Subsystem?（）

    • A、provider  
    • B、CTI ports  
    • C、call control groups  
    • D、CMT Dialog Control Group  
    • E、trigger  
    • F、RM provider

    正确答案:A,C,E

  • 第16题：

    You create a mobile Web application. You need to use a Command control to post user input from the UI elements back to the server. What are two possible ways to achieve this goal?（）

    • A、Place the Command control within an instance of the System.Web.UI.MobileControls.SelectionList control.
    • B、Place the Command control within an instance of the System.Web.UI.MobileControls.ObjectList control.
    • C、Place the Command control within an instance of the System.Web.UI.MobileControls.Form control.
    • D、Place the Command control within an instance of the System.Web.UI.MobileControls.Panel control.

    正确答案:C,D

  • 第17题：

    单选题
    Just-in-time inventory control system ______.
    A

    is adopted in most modem industries

    B

    is adopted only in very small company

    C

    is adopted only by some people

    D

    is adopted long long time ago


    正确答案： B
    解析：
    最后一段最后一句指出“Most modern industries try to keep inventory as low as possible, but when they adopt just-in-time inventory control…”，因此to keep inventory as low as possible与just-in-time inventory control表达内容相一致，由此可知零部件库存管理被大多数现代公司所采用。

  • 第18题：

    多选题
    As the Company wireless administrator， you required to be knowledgeable about the wireless LAN  components.  Which two statements about these components are true？ （）
    A

    In the autonomous access point solution， control is provided by the WLAN controller.

    B

    In the lightweight access point solution， WLAN management is provided by the WLAN Control  System （WCS）.

    C

    In the autonomous access point solution， control is provided by the WDS （Wireless Domain  Services）.

    D

    Cisco Aironet autonomous access points cannot be supported by the Cisco Unified Wireless  Network.

    E

    Ii the lightweight access point solution， WLAN management is provided by the WLAN Solution  Engine （WLSE）.

    F

    Cisco Aironet lightweight access points cannot be supported by the Cisco Unified Wireless  Network.


    正确答案： B,C
    解析： 暂无解析

  • 第19题：

    单选题
    Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
    A

    Electric power and starting air

    B

    Lube oil standby pump and control air

    C

    Hydraulic switch and engage jacking gear

    D

    Motor drain and pneumatic control system power


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    Compressed air is used on board ship （）.
    A

    for starting diesel engines

    B

    in pneumatic control system

    C

    in pneumatic tools

    D

    All the above are true


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Which of the listed refrigeration system components keeps the refrigerant circulating through the system?（）
    A

    Expansion valve

    B

    Condenser

    C

    Evaporator

    D

    Compressor


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.
    A

    control air system

    B

    forced draft air system

    C

    supply air system

    D

    ships service air system


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Which of the following statements describes the results of excessive microbiological growths within a fuel system?（）
    A

    all excessive amounts of growth will cause the main engines of the vessel to stall due to the inability to supply the proper quantities of fuel to satisfy the existing load

    B

    The deposits produced by these growths form blockages and flow restrictions ultimately leading to improper atomization of the fuel into the cylinders

    C

    Eventually the growth of these organisms will deplete the supply of food available to them, which in turn will cause their demise

    D

    If continual growth is permitted, a sweet odor similar to that associated with baking will be noticed when system components are opened for inspection


    正确答案： D
    解析： 暂无解析

相关内容