更多“As scheduled, the communications satellite went into ________ round the earth. [A] circle ”相关问题
  • 第1题:

    Which of the following cable types is used to transmit data from a satellite dish to the satellite modem?()

    A.CAT5e

    B.CAT3

    C.Fiber

    D.RG-6


    参考答案:D

  • 第2题:

    当对DrawWidth进行设置后,将影响()。

    • A、Line、Circle、Pset和Line、Shape控件
    • B、Line、Circle、Pset
    • C、Line、Circle、Poine方法
    • D、Line、Shape控件

    正确答案:C

  • 第3题:

    How do Cisco Unified Communications IP phones receive firmware upgrades?()

    • A、user request using the keypad of the phone and HTTP download
    • B、IT department scheduled upgrade using HTTP download
    • C、TFTP download based on version control through Cisco Unified Communications Manager
    • D、FTP download based on version control through Cisco Unified Communications Manager
    • E、HTTP download based on version control through Cisco Unified Communications Manager

    正确答案:C

  • 第4题:

    随体(satellite)


    正确答案:某些染色体,次缢痕的末端所具有的圆形或略呈长形的突出体。

  • 第5题:

    You are designing a strategy to optimize the DNS name resolution for the satellite offices that connect to the branch offices by using ISDN lines. What should you do?()

    • A、Use caching-only DNS servers at these satellite offices.
    • B、Configure a Hosts file for all client computers at these satellite offices.
    • C、Configure a DNS server to use WINS forward lookup at these satellite offices.
    • D、Place a DNS server with secondary zones of all domains at these satellite offices.

    正确答案:A

  • 第6题:

    单选题
    Geostationary satellite are artificial satellite which().
    A

    always move slowly

    B

    are in one place only

    C

    sometimes move and sometime don‟t

    D

    synchronize with the movement of the earth


    正确答案: D
    解析: 暂无解析

  • 第7题:

    多选题
    Which three deployment scenarios does Cisco Configuration Assistant support? ()
    A

    Cisco SR 500 in secure router mode, acting as a front end for Cisco Unified Communications 500

    B

    centralized Cisco Unified Communications Manager BE with Cisco Unified Communications 500 in SRST mode

    C

    Cisco SR 500 teleworker with Cisco Unified Communications 500 as VPN server

    D

    multi-site VPN with Cisco Unified Communications 500 platforms

    E

    redundant Cisco Unified Communications 500 with primary-to-backup failover

    F

    Cisco Unified Communications 500 to Cisco Unified Communications Manager SIP trunk


    正确答案: E,F
    解析: 暂无解析

  • 第8题:

    单选题
    Your company has a branch office that contains a Windows Server 2008 R2 computer. The Windows   Server 2008 R2 computer runs Windows Server Update Services (WSUS). The WSUS server is  configured to store updates locally.  The company opens four new satellite offices. Each satellite office connects to the branch office by using  a dedicated WAN link. Internet access is provided through the branch office.   You need to design a strategy for patch management that meets the following requirements:   èWSUS updates are approved independently for each satellite office. èInternet traffic is minimized.   What should you include in your design?()
    A

    In each satellite office, install a WSUS server. Configure each satellite office WSUS server as an  autonomous server.

    B

    In each satellite office, install a WSUS server. Configure each satellite office WSUS server as a replica  of the branch office WSUS server.

    C

    In each satellite office, install a WSUS server. Configure each satellite office WSUS server to use the  branch office WSUS server as an upstream server.

    D

    For each satellite office, create organizational units (OUs). Create and link the Group Policy objects  (GPOs) to the OUs. Configure different schedules to download updates from the branch office WSUS  server to the client computers in each satellite office.


    正确答案: B
    解析: 暂无解析

  • 第9题:

    单选题
    A circle has an area of A, A second circle has a diameter four times that of the first circle. What is the area of the second circle?
    A

    2A

    B

    4A

    C

    8A

    D

    16A

    E

    32A


    正确答案: D
    解析:
    设圆1的半径为r,所以A=πr2,所以圆2的半径为2r,面积=2*π*(2r)2=16πr2=16A,故本题应选D项。

  • 第10题:

    单选题
    Two circles, P and Q, lie in the same plane. If the center of circle Q lies on circle P, then in how many points could circle P and circle Q intersect?Ⅰ. 0Ⅱ. 1Ⅲ. 2
    A

    Ⅰ only

    B

    Ⅱ only

    C

    Ⅲ only

    D

    Ⅰ, Ⅱ and Ⅲ

    E

    Ⅱ and Ⅲ only


    正确答案: E
    解析:
    If the radius of circle Q is greater than the diameter of circle P, there is no intersection point. If the radius of circle Q is equal to the diameter of circle P, there is one intersection point. If the radius of circle Q is less than the diameter of circle P, there are two intersection points.

  • 第11题:

    单选题
    下列程序的运行结果是(  )。class Shape{ public Shape(){ System.out.print("Shape"); }}class Circle extends Shape{ public Circle(){ System.out.print("Circle"); }}public class Test{ public static void main(String[]args){ Shape d=new Circle(); }}
    A

    Shape

    B

    Circle

    C

    ShapeCircle

    D

    程序有错误


    正确答案: B
    解析:
    继承是面向对象编程的一个主要优点之一,它对如何设计Java类有着直接的影响。该程序首先编写了一个Shape的类,然后又编写一个类Circle去继承Shape类。由于子类拥有父类所有的属性和方法,所以输出的是ShapeCircle。

  • 第12题:

    单选题
    From thousands of kilometers above our earth, a communications satellite _____a signal from one side of the world and relays it directly to the other.
    A

    receives

    B

    accepts

    C

    admits

    D

    offers


    正确答案: D
    解析:

  • 第13题:

    Which statement concerning satellite EPIRBs is TRUE ________.

    A.Once activated,these EPIRBs continuously send up a signal for use in identifying the vessel and for determining the position of the beacon

    B.The coded signal identifies the nature of the distress situation

    C.The coded signal only identifies the vessel's name and port of registry

    D.If the GMDSS Radio Operator does not program the EPIRB,it will transmit default information such as the follow-on communications frequency and mode


    正确答案:A

  • 第14题:

    下列属于Visual Basic工程文件的是()。

    • A、circlE.frm
    • B、circlE.vbp
    • C、circlE.doc
    • D、circlE.jpg

    正确答案:B

  • 第15题:

    Which three deployment scenarios does Cisco Configuration Assistant support? ()

    • A、 Cisco SR 500 in secure router mode, acting as a front end for Cisco Unified Communications 500
    • B、 centralized Cisco Unified Communications Manager BE with Cisco Unified Communications 500 in SRST mode
    • C、 Cisco SR 500 teleworker with Cisco Unified Communications 500 as VPN server
    • D、 multi-site VPN with Cisco Unified Communications 500 platforms
    • E、 redundant Cisco Unified Communications 500 with primary-to-backup failover
    • F、 Cisco Unified Communications 500 to Cisco Unified Communications Manager SIP trunk

    正确答案:A,C,D

  • 第16题:

    Your company has a branch office that contains a Windows Server 2008 R2 server. The server runs Windows Server Update Services (WSUS).   The company opens four new satellite offices. Each satellite office connects to the branch office by using a dedicated WAN link. You need to design a strategy for patch management that meets the following  requirements:   èWSUS updates are approved from a central location.   èWAN traffic is minimized between the branch office and the satellite offices. What should you include in your design?()

    • A、In each satellite office, install a WSUS server. Configure each satellite office WSUS server as a replica of the branch office WSUS server.
    • B、In each satellite office, install a WSUS server. Configure each satellite office WSUS server as an autonomous server that synchronizes to the branch office WSUS server.
    • C、On the branch office WSUS server, create a computer group for each satellite office. Add the client computers in each satellite office to their respective computer groups.
    • D、For each satellite office,create an organizational unit(OU).Create and link a Group Policy object(GPO)to each OU. Configure different schedules to download updates from the branch office WSUS  server to the client computers in each satellite office.

    正确答案:A

  • 第17题:

    单选题
    You are designing a strategy to optimize the DNS name resolution for the satellite offices that connect to the branch offices by using ISDN lines.  What should you do?()
    A

     Use caching-only DNS servers at these satellite offices.

    B

     Configure a Hosts file for all client computers at these satellite offices.

    C

     Configure a DNS server to use WINS forward lookup at these satellite offices.

    D

     Place a DNS server with secondary zones of all domains at these satellite offices.


    正确答案: A
    解析: 暂无解析

  • 第18题:

    填空题
    If a circle has an area of 49π, what is the diameter of the circle?____

    正确答案: 14
    解析:
    因为圆的面积为πr2,πr2 =49π,r=7,直径为2r=14。

  • 第19题:

    单选题
    What is the primary purpose for Digital Selective Calling (DSC)?()
    A

    DSC provides reception of weather and navigational warnings plus search and rescue information

    B

    DSC provides low-cost,routine communications for the vessel operator

    C

    DSC is to be used for transmitting and receiving distress alerts to and from other ships or coast radio stations via radio

    D

    This aids SAR authorities in tracking a vessel's position by satellite


    正确答案: D
    解析: 暂无解析

  • 第20题:

    单选题
    We went right round to the west coast by _____ sea instead of driving across _____ continent.
    A

    the; the

    B

    /; the

    C

    the; /

    D

    /; /


    正确答案: B
    解析:
    by sea是固定词组,意为“乘船”。第二个表特指陆地,用定冠词the。

  • 第21题:

    单选题
    Hancock’s study focuses on _____.
    A

    the consequences of lying in various communications media

    B

    the success of communications technologies in conveying ideas

    C

    people’s preferences in selecting communications technologies

    D

    people’s honesty’s levels across a range of communications media


    正确答案: D
    解析:
    细节题。选项D同义替换了首段第二句,compare honesty across a range of communications media意为“比较人们通过各种媒介进行交流时所表现出的诚实度”。选项A、C文中未提及。由于只在文章首句提及“communications technology”,故排除B项。

  • 第22题:

    单选题
    In areas covered by Inmarsat HF can be used as an()to satellite communications.
    A

    alternation

    B

    alternate

    C

    alter

    D

    alternative


    正确答案: B
    解析: 暂无解析

  • 第23题:

    单选题
    Concerning a celestial observation,the azimuth angle is measured from the principal vertical circle to the().
    A

    Greenwich celestial meridian

    B

    hour circle of the body

    C

    local celestial meridian

    D

    vertical circle of the body


    正确答案: D
    解析: 暂无解析