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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 actionB proportional actionC two position actionD r

题目
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

相似考题

1.The basic unit of measure in a computer system is the(72). It is the smallest unit in computing. There are some other measures in a computer, such as Kilobyte, Megabyte, Gigabyte and so on.A．KilobyteB．BitC．GigabyteD．Megabyte

2.permit a user to compose and transmit a message on an office automation system.A．Electronic mailB．DatagramC．MSN messageD．Search engine

3.The smallest unit of information in a computer system is called a(72)A．BitB．ByteC．blockD．file

4.LTE中『____』基于主同步信号和辅同步信号进行的。(What carries on basing on the main synchronized signal and the auxiliary synchronized signal in LTE system『____』.)

更多“In a pneumatic automation system, a unit producing a signal”相关问题

  • 第1题：

    A complete computer system contains(74)。

    A．arithmetic unit, control unit and memory

    B．input/output devices and mainframe

    C．mainframe. and programs of utility

    D．hardware system and software system


    正确答案：D
    解析：本题考查专业英语应用能力和计算机系统的构成。任何一个计算机系统都是由两个部分组成的：计算机硬件系统和计算机软件系统。硬件系统有：运算器、控制器、存储器(内存储器和外存储器)、输入设备(键盘、鼠标、绘图仪等)、输出设备(显示器、打印机等)。软件系统有：应用软件、系统软件。参考答案的译文：A：算术单元、控制单元和存储器，B：输入/输出设备和主机。C：主机和可用程序。D：硬件系统和软件系统。题目参考译文：完整的计算机系统应包括硬件系统和软件系统。

  • 第2题：

    all of the following are function of crm system except （）

    A.automation procurement

    B.automation sales

    C.automation marketing

    D.automation customer service


    正确答案：A
    所有以下是客户关系管理系统功能除了（）A、自动化采购B、自动化销售C、自动化营销D、自动化客户服务

  • 第3题：

    CDMA for cellular system can be described as follows. As with FDMA, each cell is allocated a frequency （71） , when is split into two parts, half for reverse (mobile unit to base station) and half for （72） (base station to mobile unit). For full-duplex （73） , a mobile unit both reverse and forward channels. Transmission is in the form. of direct-sequence spread （74） , which used a chipping code to increase the data rate of the transmission, resulting is an increased signal bandwidth. Multiple access is provided by assigning （75） chipping codes to multiple users, so that the receiver can recover the transmission of an individual unit from multiple transmissions.

    A.ware

    B.signal

    C.bandwidth

    D.domain


    正确答案：C
    用于蜂窝系统的CDMA技术可以描述如下。就像FDMA一样，每一个小区被分配了一个频带，该频带划分为两半，一半用于反向信道（从移动终端到基站），一半用于正向信道（从基站到移动终端）。在全双工通信中，移动终端使用了反向和正向两个信道。传输以直接序列扩频方式进行，用一个码片来增加传输的数据速率，同时也产生了额外的信号带宽。通过把正交的各个码片指定给不同的用户就可以实现多路访问，这样接收者就能够从多个传输中提取并恢复需要的传输单元。

  • 第4题：

    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


    正确答案：A

  • 第5题：

    Body language is a powerful communication system,__________it can signal very different things.

    A．but
    B．so
    C．for
    D．then

    答案：C
    解析：
    考查逻辑关系。句意为“肢体语言是一个强大的交流系统， _________它可以表示非常不同的东西”。根据语境可知，前后是因果关系．后半句表示原因。故选C。

  • 第6题：

    all of the following are function of crm system except （）

    • A、automation procurement
    • B、automation sales
    • C、automation marketing
    • D、automation customer service

    正确答案:A

  • 第7题：

    Which two statements are true about broadband cable （HFC） systems？（）

    • A、Cable modems only operate at Layer 1 of the OSI model.
    • B、Cable modems operate at Layers 1 and 2 of the OSI model.
    • C、Cable modems operate at Layers 1， 2， and 3 of the OSI model.
    • D、A function of the cable modem termination system （CMTS） is to convert the modulated signal from the cable modem into a digital signal.
    • E、A function of the cable modem termination system is to convert the digital data stream from the end user host into a modulated RF signal for transmission onto the cable system.

    正确答案:B,D

  • 第8题：

    A large customer location world-wide needs to remotely update UEFI Firmware on their systems. Which function of IBM System Director will help this customer？（）

    • A、Automation Manager
    • B、Update Manager
    • C、System Maintenance and Update Tool
    • D、Service and Support Manager

    正确答案:B

  • 第9题：

    单选题
    （）conveys a signal of desired rudder angle from the bridge and activates the power unit and transmission system unit the desired angle is reached.
    A

    The control equipment

    B

    The power unit

    C

    The transmission system

    D

    The follow-up mechanism


    正确答案： C
    解析： 暂无解析

  • 第10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11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12题：

    单选题
    Loran-C uses the multiple pulse system because（）.
    A

    Less signal energy is necessary for receiver operation

    B

    More signal energy is available at the receiver

    C

    It significantly increases the peak power

    D

    It increases the signal capacity


    正确答案： B
    解析： 暂无解析

  • 第13题：

    All of the following are functions of CRM system except （ 71 ）。

    A.automation procurement

    B.automation sales

    C.automation marketing

    D.automation customer service


    正确答案：A

  • 第14题：

    Which of the following is the smallest separately installable unit on an AIX system?()

    A.File

    B.Fileset

    C.Bundle

    D.Licensed program product


    参考答案：B

  • 第15题：

    ● The basic unit of measure in a computer system is the（72）. It is the smallest unit in computing. There are some other measures in a computer, such as Kilobyte, Megabyte, Gigabyte and so on.

    （72）

    A．Kilobyte

    B．Bit

    C．Gigabyte

    D．Megabyte


    正确答案：B

  • 第16题：

    Loran-C uses the multiple pulse system because ______．

    A.Less signal energy is necessary for receiver operation

    B.More signal energy is available at the receiver

    C.It significantly increases the peak power

    D.It increases the signal capacity


    正确答案：B

  • 第17题：

    All of the following are functions of CRM system except （ ）

    A.automation procurement
    B.automation sales
    C.automation marketing
    D.automation customer service

    答案：A
    解析：
    翻译：下列选项中不属于CRM系统功能的是A．采购自动化 B．销售自动化 C．营销自动化 D．客服服务自动化CRM 功能不包含自动采购。

  • 第18题：

    Which Tivoli application has a predefined X-Agent available？ （）

    • A、 IBM Tivoli Storage Manager
    • B、 IBM Tivoli Enterprise Console
    • C、 IBM Tivoli Configuration Manager
    • D、 IBM Tivoli System Automation Manager

    正确答案:A

  • 第19题：

    Which of the following is the smallest separately installable unit on an AIX system?（）

    • A、File
    • B、Fileset
    • C、Bundle
    • D、Licensed program product

    正确答案:B

  • 第20题：

    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


    正确答案： D
    解析： 暂无解析

  • 第21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22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23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24题：

    单选题
    In a storm，the leeward lines of a ship’s mooring system will（）.
    A

    pull the unit in the same direction that the weather is pushing it

    B

    pull the unit in the opposite direction that the weather is pushing it

    C

    tend to keep the unit on its original location over the well head

    D

    affect the unit's draft and inclination as maximum mooring tensions are reached


    正确答案： C
    解析： 暂无解析

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