What are three factors that limit the maximum distance of an amplified optical signal without regeneration? （）(Choose three.)A、fiber dispersionB、signal attenuationC、transmitter powerD、amplifier bandwidthE、receiver dispersion tolerance

题目

What are three factors that limit the maximum distance of an amplified optical signal without regeneration? （）(Choose three.)

  • A、fiber dispersion
  • B、signal attenuation
  • C、transmitter power
  • D、amplifier bandwidth
  • E、receiver dispersion tolerance
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3.What are three factors that limit the maximum distance of an amplified optical signal without regeneration? ()(Choose three.)A. fiber dispersionB. signal attenuationC. transmitter powerD. amplifier bandwidthE. receiver dispersion tolerance

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更多“What are three factors that limi”相关问题

  • 第1题：

    What three in combination are factors that can cause four－wave mixing in fiber－optic cables? ()(Choose three.)

    A. low optical power

    B. high optical power

    C. few optical channels

    D. many optical channels

    E. low chromatic dispersion

    F. high chromatic dispersion

    G. too much power differential in the optical channels


    参考答案：B, D, E

  • 第2题：

    What are three factors a network administrator must consider before implementing Netflow in the network?()

    A.CPU utilization

    B.where Netflow data will be sent

    C.number of devices exporting Netflow data

    D.port availability

    E.SNMP version

    F.WAN encapsulation


    参考答案：A, B, C

  • 第3题：

    In midocean，the characteristics of a wave are determined by three factors．What is NOT one of these factors?

    A.Effect of the moon’s gravity

    B.Fetch

    C.Wind velocity

    D.Length of time a wind has been blowing


    正确答案：A
    在海洋中央，波浪的特性由三个因数决定，月球引力的影响不是原因之一。

  • 第4题：

    ______ you said is true, there are still other factors to be considered.

    A．Supposed that what
    B．Supposing what that
    C．Granted that what
    D．Considered what that

    答案：C
    解析：
    考查句法知识。granted that是一个固定搭配，表示“假定，即使”，what作said的宾语。A项应该是supposing，所以也不正确，B和D两项不符合语法要求，故排除。句意为“假设你说的是真的，还有其他的因素需要考虑”，故选C。

  • 第5题：

    What three in combination are factors that can cause four-wave mixing in fiber-optic cables？（）

    • A、 low optical powe
    • B、 high optical power
    • C、 few optical channels
    • D、 many optical channels
    • E、 low chromatic dispersion
    • F、 high chromatic dispersion
    • G、 too much power differential in the optical channels

    正确答案:B,D,E

  • 第6题：

    What three in combination are factors that can cause four-wave mixing in fiber-optic cables? （）(Choose three.)

    • A、low optical power
    • B、high optical power
    • C、few optical channels
    • D、many optical channels
    • E、low chromatic dispersion
    • F、high chromatic dispersion
    • G、too much power differential in the optical channels

    正确答案:B,D,E

  • 第7题：

    What is the meaning of integration?（）

    • A、To link some separate factors as a whole chain    
    • B、United
    • C、To put together                              
    • D、Mixture

    正确答案:A

  • 第8题：

    多选题
    What are three factors a network administrator must consider before implementing Netflow in the network?（）
    A

    CPU utilization

    B

    where Netflow data will be sent

    C

    number of devices exporting Netflow data

    D

    port availability

    E

    SNMP version

    F

    WAN encapsulation


    正确答案： C,B
    解析： 暂无解析

  • 第9题：

    单选题
    ______ you said is true, there are still other factors to be considered .
    A

    Supposed that what

    B

    Supposing what that

    C

    Granted that what

    D

    Considered what that


    正确答案： C
    解析：

  • 第10题：

    多选题
    What are three factors that limit the maximum distance of an amplified optical signal without regeneration? （）(Choose three.)
    A

    fiber dispersion

    B

    signal attenuation

    C

    transmitter power

    D

    amplifier bandwidth

    E

    receiver dispersion tolerance


    正确答案： D,A
    解析： 暂无解析

  • 第11题：

    多选题
    What three in combination are factors that can cause four-wave mixing in fiber-optic cables？（）
    A

    low optical powe

    B

    high optical power

    C

    few optical channels

    D

    many optical channels

    E

    low chromatic dispersion

    F

    high chromatic dispersion

    G

    too much power differential in the optical channels


    正确答案： D,B
    解析： 暂无解析

  • 第12题：

    多选题
    What are three current business factors that are influencing customer decisions in making technology investments?（）
    A

    number of product features

    B

    return on investment

    C

    competitiveness

    D

    regulation

    E

    day one costs

    F

    availability of budget


    正确答案： F,E
    解析： 暂无解析

  • 第13题：

    What are three current business factors that are influencing customer decisions in making technology investments?()

    A.number of product features

    B.return on investment

    C.competitiveness

    D.regulation

    E.day one costs

    F.availability of budget


    参考答案：B, C, D

  • 第14题：

    The three Ds mentioned in the last paragraph are（ ）

    [A] auction houses' favorites

    [B] contemporary trends

    [C] factors promoting artwork circulation

    [D] styles representing Impressionists


    正确答案：C
    最后一段提到的三个D是指______。
    [A]拍卖行最喜欢的东西
    [B]当代的(流行)趋势
    [C]促进艺术品循环的因素
    [D]代表印象派的风格
    答案解析：[C]推理判断题。文章最后一段第三句“The three Ds—death，debt and divorce—still deliver works of art to the market．”提到“三个D一一死亡，债务和离婚，依然为市场提供艺术作品。”紧接着下一句指出，“But anyone who does not have to sell is keeping away，waiting for confidence to return．”即“但那些并非必须卖作品的人就一直远离着市场，等待信心的回归。”可见，三个D(死亡，债务和离婚)，是促进艺术品进入市场循环的因素，故选[C]。[A]、[B]和[D]都不符合题意，均排除。

  • 第15题：

    _______you said is true, there are still other factors to be considered.

    A．Supposed that what
    B．Supposing what that
    C．Granted that what
    D．Considered what that

    答案：C
    解析：
    考查固定搭配。granted that是一个固定搭配，表示“假定，即使”，what作said的宾语。A项应该是supposing，所以也不正确，B和D两项不符合语法要求，故排除。句意为“假设你说的是真的，还有其他的因素需要考虑”，故选C。

  • 第16题：

    What are the factors that contribute to successful practice of grammar?
    The following are some of the factors that definitely contribute to successful practice:
    1) Pre-learning.
    2) Volume and repetition.
    3) Success-orientation.
    4) Heterogeneity.
    5) Teacher assistance.
    6) Interest.
    略

  • 第17题：

    What are three factors that limit the maximum distance of an amplified optical signal without regeneration？ （）

    • A、 fiber dispersion
    • B、 signal attenuation
    • C、 transmitter power
    • D、 amplifier bandwidth
    • E、 receiver dispersion tolerance

    正确答案:A,B,E

  • 第18题：

    What are three factors used to determine the amount of bandwidth that is required for a single VoIP call？（）

    • A、codec
    • B、link speed
    • C、Layer 2 encapsulation
    • D、packet overhead （IP/UDP/RTP）
    • E、link delay
    • F、total number of simultaneous calls that are allowed

    正确答案:A,C,D

  • 第19题：

    What are three current business factors that are influencing customer decisions in making technology investments?（）

    • A、return on investment
    • B、competitiveness
    • C、number of product features
    • D、day one costs
    • E、regulation
    • F、availability of budget

    正确答案:A,D,F

  • 第20题：

    问答题
    What are the factors that contribute to successful practice of grammar?

    正确答案： The following are some of the factors that definitely contribute to successful practice:
    1) Pre-learning.
    2) Volume and repetition.
    3) Success-orientation.
    4) Heterogeneity.
    5) Teacher assistance.
    6) Interest.
    解析： 暂无解析

  • 第21题：

    多选题
    What are three factors used to determine the amount of bandwidth that is required for a single VoIP call？（）
    A

    codec

    B

    link speed

    C

    Layer 2 encapsulation

    D

    packet overhead （IP/UDP/RTP）

    E

    link delay

    F

    total number of simultaneous calls that are allowed


    正确答案： B,C
    解析： 暂无解析

  • 第22题：

    单选题
    In mid-ocean，the characteristics of a wave are determined by three factors. What is NOT one of these factors?（）
    A

    Effect of the moon's gravity

    B

    Fetch

    C

    Wind velocity

    D

    Length of time a wind has been blowing


    正确答案： D
    解析： 暂无解析

  • 第23题：

    多选题
    What three in combination are factors that can cause four-wave mixing in fiber-optic cables? （）(Choose three.)
    A

    low optical power

    B

    high optical power

    C

    few optical channels

    D

    many optical channels

    E

    low chromatic dispersion

    F

    high chromatic dispersion

    G

    too much power differential in the optical channels


    正确答案： A,B
    解析： 暂无解析

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