Which of the following statements is NOT true?（）A、The open field system provided a good opportunity to experiment.B、The open field system wasted land.C、The open field system was wasteful of labor and time.D、The open field system made livestock farming dif

题目

Which of the following statements is NOT true?（）

  • A、The open field system provided a good opportunity to experiment.
  • B、The open field system wasted land.
  • C、The open field system was wasteful of labor and time.
  • D、The open field system made livestock farming difficult.
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更多“Which of the following statements is NOT true?（）A、The open field system provided a good opportunity to experiment.B、The open field system wasted land.C、The open field system was wasteful of labor and time.D、The open field system made livestock farming dif”相关问题

  • 第1题：

    第一组

    An automatic system usually consists of a control system and an information system. A control system is a system which measures the condition of some entity and, with the information, governs the state of a variable; i.e., speed, temperature, pressure, position, etc. The open-loop system is the simplest form. a control system may assume. It is distinguished from the closed-loop system by the lack of an input which measures the state of the controlled variable; such an input is called a feedback. In modern ships the open-loop system has practically disappeared and the closed-loop system which operates with a feed-back is extensively used. An information system serves the parallel function of monitoring system or plant performance. The monitoring function may serve a number of purposes; specifically it may indicate values of controlled variables to guide remote control operations, warn of off-limit conditions and provide record of performance. In many cases a visual and audible alarm may be provided to warn of off-limit conditions on board ship and, associated with this, the important variables will be recorded on demand. The automatic control system can be more sophisticated by incorporating digital-processing equipment, that is, a computer. This computer is usually fed with signals from all sensors. It scans the values of the sensors and generates alarm signals for off-limit conditions, acting as a super-supervisor. Sometimes, it can even make necessary and take the necessary action to optimize performance without human intervention.

    The closed-loop system differs from the open-loop system by

    A.the lack of a feedback

    B.the presence of a feed back

    C.the lack of a computer

    D.the presence of a computer


    正确答案：B

  • 第2题：

    Which of the following statements is NOT true?（）

    AThe open field system provided a good opportunity to experiment.

    BThe open field system wasted land.

    CThe open field system was wasteful of labor and time.

    DThe open field system made livestock farming difficult.


    A
    略

  • 第3题：

    Traditional farming involved the open field village,a system that dated back to the（）century.

    A4th

    B5th

    C6th

    D7th


    B
    略

  • 第4题：

    Traditional farming involved the open field village,a system that dated back to the（）century.

    • A、4th
    • B、5th
    • C、6th
    • D、7th

    正确答案:B

  • 第5题：

    OSI参考模型中的OSI表示的是（）

    • A、Organization Standard Institute
    • B、Organization Standard Interconnection
    • C、Open System Internet
    • D、Open System Interconnection

    正确答案:D

  • 第6题：

    Which of the following are good examples of malware prevention in Windows XP?（） (Select TWO)

    • A、Use a trusted aggressive pop-up blocker.
    • B、Update the anti-spyware software after scanning the system.
    • C、Re-install the operating system every six months.
    • D、Avoid notorious websites and hyperlinks.
    • E、Open and then scan all attachments in emails.

    正确答案:A,D

  • 第7题：

    You have lost all your SYSTEM tablespace datafiles （system_01.dbf and system_02.dbf） nd the database has crashed.  What would be the appropriate order of operations to correct the situation？（）   a. Mount the database with the startup mount command.  b. Take the SYSTEM datafile offline with the alter database command.  c. Restore the SYSTEM_01.dbf datafile from backup media with the required archived redo logs.  d. Restore all SYSTEM tablespace-related datafiles from backup media. e. Issue the recover tablespace SYSTEM command.  f. Issue the recover datafile SYSTEM_01.dbf command.  g. Open the database with the alter database open command.  h. Open the database with the alter database open resetlogs command.

    • A、a， c， f， g
    • B、b， d， e， h
    • C、a， b， c， f， g
    • D、d， a， e， g
    • E、b， c， f， e， g

    正确答案:D

  • 第8题：

    单选题
    Which of the following statements is NOT considered a characteristic of farming in the late 18th and early 19th centuries?（）
    A

    Use of artificial fertilizer.

    B

    Introduction of new agricultural machinery.

    C

    The'Open-field'system.

    D

    A system of crop rotation.


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    The most suitable title of this passage is ______.
    A

    Progress in the Field of Study

    B

    Teachers’ Role in Study

    C

    How to Improve Students’ Ability

    D

    Bad Points of the Examination System


    正确答案： B
    解析：
    主旨大意题。文章从几个方面阐述了现行考试制度的弊端，对现行的考试制度强烈不满。

  • 第10题：

    单选题
    Traditional farming involved the open field village,a system that dated back to the（）century.
    A

    4th

    B

    5th

    C

    6th

    D

    7th


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    As an alternative to the conventional seawater cooling system, is based on principles about cooler locations, （）flow control and preheating, but with a central cooler and one additional set of pumps（）.
    A

    the central cooling system, different

    B

    the central cooling system, the same

    C

    the open cooling system, different

    D

    the open cooling system, the same


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Which of the following statements is NOT true?（）
    A

    The open field system provided a good opportunity to experiment.

    B

    The open field system wasted land.

    C

    The open field system was wasteful of labor and time.

    D

    The open field system made livestock farming difficult.


    正确答案： A
    解析： 暂无解析

  • 第13题：

    The Internet is an open system, and most information is available to everyone．It is very important to add ______ to existing system for protecting the secret information.

    A．Web pages

    B．modem

    C．security

    D．network


    正确答案：C
    解析：译文的含义是：因特网是开放式系统，多数信息对每个人都可用。为了保护秘密信息，对现有的系统增加()是非常重要的。选项A～D的含义分别是网页、调制解调器、安全性和网络。

  • 第14题：

    Which of the following statements is NOT considered a characteristic of farming in the late 18th and early 19th centuries?（）

    AUse of artificial fertilizer.

    BIntroduction of new agricultural machinery.

    CThe'Open-field'system.

    DA system of crop rotation.


    C
    略

  • 第15题：

    Which of the following statements is NOT considered a characteristic of farming in the late 18th and early 19th centuries?（）

    • A、Use of artificial fertilizer.
    • B、Introduction of new agricultural machinery.
    • C、The'Open-field'system.
    • D、A system of crop rotation.

    正确答案:C

  • 第16题：

    在网络体系结构中，OSI表示（）

    • A、Open System Interconnection
    • B、Open System Information
    • C、Operating System Interconnection
    • D、Operating System Information

    正确答案:A

  • 第17题：

    Which of the following is true about the MPLS header and its EXP field size？（）

    • A、The MPLS header is 2 bytes，and the EXP field is 3 bits long.
    • B、The MPLS header is 1 byte，and the EXP field is 3 bits long.
    • C、The MPLS header is 4 bytes，and the EXP field is 3 bits long.
    • D、The MPLS header is 3 bytes，and the EXP field is 3 bits long.

    正确答案:C

  • 第18题：

    when eduar tried open the coming attractions view. he got the following error message: incorrect data type for operator or @function: text expected. What did he do to cause this to happen?（）

    • A、entered text in a number field
    • B、neglected to place a formula in a validation event
    • C、neglected to place a formula in a translation event
    • D、combined a text field and a time field in formula

    正确答案:D

  • 第19题：

    Data files of which three tablespaces can be recovered by performing an open recovery？（）

    • A、TEMP
    • B、UNDO
    • C、INDEX
    • D、SYSAUX
    • E、SYSTEM

    正确答案:A,C,D

  • 第20题：

    单选题
    Which of the following marine examples belongs to the open loop control system?（）
    A

    Accommodation heating system

    B

    Steering gear

    C

    Boiler control

    D

    Cargo control


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    When it is necessary to open a refrigeration system for repairs and the system will be open for more than a few minutes, the open ends of the system should be （）.
    A

    dehydrated

    B

    purged

    C

    plugged

    D

    evacuated


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    If a DC motor runs hot, the cause may be （）
    A

    high mica condition

    B

    low ambient temperature

    C

    clogged ventilation ducts

    D

    an open in the shunt field


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    In an alternating current electrical system, a low system power factor is a direct sign of （）
    A

    wasted energy

    B

    efficient operation

    C

    a short in the exciter field windings

    D

    an excessive number of minor system grounds


    正确答案： C
    解析： 暂无解析

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