In an AC.synchronous motor electric propulsion plant,propeller speed is controlled by()A.prime mover speedB.number of energized main motor polesC.propulsion generator field strengthD.electric coupling field strength

题目
In an AC.synchronous motor electric propulsion plant,propeller speed is controlled by()

A.prime mover speed

B.number of energized main motor poles

C.propulsion generator field strength

D.electric coupling field strength


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  • 第1题:

    A) formation

    B) explosion

    C) eruption

    D) propulsion


    正确答案:C
    答案:C
    [试题分析]近义词辨析题。
    [详细解答]eruption n.爆发,填入后符合句意,故答案为 C。

  • 第2题:

    Which one is the microwave plan tool?()

    A. Atoll

    B. Connect

    C. Asset

    D. Plant


    参考答案:A

  • 第3题:

    The activities of credit companies are regulated by law.

    A:fought
    B:abolished
    C:removed
    D:controlled

    答案:D
    解析:
    本句意思:信贷公司的业务受到法律的制约。regulate意思是“约束,管理”,与control(控制,管理)意思相近。fight打架,战斗;abolish废除,废止;remove移开,去除。

  • 第4题:

    Whichofthefollowingcommandswillsettheduplexofanetworkadapter?()

    A.no-amedia_speed=100_Full_Duplexen0

    B.ifconfig-amedia_speed=100_Full_Duplexent0

    C.chdev-lent0-amedia_speed=100_Full_Duplex

    D.chinet-len0-amedia_speed=100_Full_Duplexen0


    参考答案:C

  • 第5题:

    The word"motel" comes from"motor + hotel". This is an example of__________ in morphology.

    A.backformation
    B.conversion
    C.blending
    D.acronym

    答案:C
    解析:
    考查英语构词法。blending(混成词)是指把两个词同时进行裁剪,或截头或去尾,或只裁剪两个词中的一个,保留另外一个。然后把两部分拼合在一起,构成一个新词。故选C。

  • 第6题:

    During his lifetime he has accumulated quite a fortune.

    A:exchanged
    B:collected
    C:spent
    D:controlled

    答案:B
    解析:
    本题考查的是对动词的认知。这句话的意思是:他在一生中积累了不少财富。accumulate的意思是积累。A.exchanged交换;B.collected收集;C.spent花费;D.controlled控制。accumulate和collect意思最接近,所以选B。