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11g wireless signals operating at 24GHz has a maximum line of sight range of which of thefollowing?()A. 460 feet (140 meters)B. 540 feet (165 meters)C. 560 feet (171 meters)D. 840 feet (256 meters)

题目
11g wireless signals operating at 24GHz has a maximum line of sight range of which of thefollowing?()

A. 460 feet (140 meters)

B. 540 feet (165 meters)

C. 560 feet (171 meters)

D. 840 feet (256 meters)


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    DOS的英文表示是()。

    A、Disk、Operating、System

    B、Daily、Operating、System

    C、Disk、Open、System

    D、Date、Open、System


    参考答案:A

  • 第2题:

    Main engines as well as auxiliary engines operating on heavy fuel should have continuousoon the lubricating oil, either according tothebypass or batch principles

    A.filtering

    B.centrifuging

    C.depositing

    D.operating


    答案:B

  • 第3题:

    LOS(Line-of-sight)计算中,计算结果与哪些因素有关()

    A.发射点(天线)位置

    B.天线距地面高度

    C.接收点(天线)位置

    D.地貌情况


    参考答案:A, B, C, D

  • 第4题:

    Whichfouraretrue?()

    A.Has-arelationshipsshouldneverbeencapsulated.

    B.Has-arelationshipsshouldbeimplementedusinginheritance.

    C.Has-arelationshipscanbeimplementedusinginstancevariables.

    D.Is-arelationshipscanbeimplementedusingtheextendskeyword.

    E.Is-arelationshipscanbeimplementedusingtheimplementskeyword.

    F.Anarrayoracollectioncanbeusedtoimplementaone-to-manyhas-arelationship.

    G.TherelationshipbetweenMovieandActressisanexampleofanis-arelationship.


    参考答案:C, D, E, F

  • 第5题:

    A SONET network typically uses which of the following transmission media?()

    A. Single-mode fiber

    B. Multimode fiber

    C. Copper

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    参考答案:A

  • 第6题:

    The relative pronoun "which" in the last paragraph (Line 6) refers to (  ).

    A.experts
    B.periods
    C.theories
    D.issues

    答案:D
    解析: