The material used extensively as electrolytic protection around bronze propellers is ______.A.BrassB.CopperC.LeadD.Zinc

题目

The material used extensively as electrolytic protection around bronze propellers is ______.

A.Brass

B.Copper

C.Lead

D.Zinc

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更多“The material used extensively as electrolytic protection around bronze propellers is _____ ”相关问题

  • 第1题：

    Lead __ as a material for sculptures since the time of the early Greeks.

    A.has been used

    B.being used

    C.has used

    D.used


    参考答案：A

  • 第2题：

    Kort nozzles are installed around the propellers of some vessels to ______.

    A.increase the thrust of the propeller

    B.protect the propeller from striking sawyers

    C.protect the propeller from striking barges towed on the hip

    D.protect the propeller from touching bottom in low water


    正确答案：A
    一些船舶装配在螺旋桨周围的导流管会减少螺旋桨的？推力。

  • 第3题：

    “It is declared that this shipment does not contain any wood packing materials。” 与这句话意思接近的是（ ）。
    A. We declare that no wood packing material was used in this shipment.
    B. No declaration was made whether wood packing materials had been used or not.
    C. If you don't make any declaration, we will not use any wood packing material.
    D. We will not use any wood packing material since you have provided us a declaration of no wood packing material.


    答案：A
    解析：

  • 第4题：

    What is the default Quality of Service traffic class used by the ERX Edge Router?（）

    • A、bronze forwarding
    • B、assured forwarding
    • C、expedited forwarding
    • D、best effort forwarding

    正确答案:D

  • 第5题：

    单选题
    The material used to produce a sand painting is ______.
    A

    colorful paint

    B

    beach sand

    C

    sandstone

    D

    flour


    正确答案： C
    解析：
    细节题。从第三段第二句话“The materials used are easily found in the areas the Navaho inhabit: brown, red, yellow and white sandstone….”不难看出答案为C。

  • 第6题：

    单选题
    The required fireman’s outfits required for ship’s are not to be used for any other purpose EXCEPT for the（）.
    A

    oxygen and explosion meter when it is used for detection of flare gases

    B

    self-contained breathing apparatus，when used as protection from gas leaking from a refrigeration unit

    C

    boots and gloves that are made of rubber or electrically non-conductive material，if used when repairing electrical equipment

    D

    lifeline，if used by personnel entering a compartment which might be deficient of oxygen


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    Which material should NOT be used to secure cargo on deck for a voyage（）.
    A

    Steel chain

    B

    Wire rope

    C

    Steel strapping

    D

    Fiber rope


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is（）.
    A

    nonmagnetic

    B

    weatherproof

    C

    corrosion resistant

    D

    capable of being permanently affixed to the vessel


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the materials listed is used as the dynamic seal material on mechanical seals installed on most centrifugal pumps used in water service?（）
    A

    Copper

    B

    Copper and carbon

    C

    Carbon

    D

    Bronze


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to（）.
    A

    reduce electrolytic action on heat exchanger metals

    B

    keep heat transfer surfaces shiny and clean

    C

    prevent rapid accumulation of marine growth

    D

    provide a protective coating on heat exchanger surfaces


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    The harmful effects of excessive alcohol intake on the hepatic system is extensively documented by medical studies.
    A

    is extensively documented by medical studies

    B

    is documented more extensively by medical studies

    C

    are extensively documented by medical studies

    D

    medical studies are extensively documenting

    E

    has documented extensively by medical studies


    正确答案： C
    解析：
    主语harmful effects为复数，与动词is单数数上不一致。动词应改为are。

  • 第12题：

    单选题
    A rolling hitch can be used to（）.
    A

    make a temporary eye

    B

    mouse a hook

    C

    secure a line around a spar

    D

    shorten a line


    正确答案： C
    解析： 暂无解析

  • 第13题：

    With pollution becoming an international problem, environment protection has been handled with greater care around the world. (翻译)


    参考答案：随着污染成为国际性问题，世界各地都更加关注地处理环境保护。

  • 第14题：

    N Company manufactures a kind of product used throughout the machinery industry.The standard price of the materials for the products is $ 6 per kilogram; the standard quantity of materials allowed per unit is 1.5 kilograms. During July, 2 000 units of the products were finished, for which 3 200 kilograms of materials were used at a total direct material cost of $ 18 560.


    Requirment :


    A. Calculate the direct material price variance for July. Indicate whether it is favorable (F) or unfavorable (U) and who is generally responsible for this variance.


    B. Calculate the direct material quantity variance for July. Indicate whether it is favorable (F) or unfavorable (U) and who is generally responsible for this variance.


    C. Calculate the total direct material cost variance for July. Indicate whether it is favorable (F) or unfavorable (U).





    答案：
    解析：

    Answer:


    A. Direct material price variance


    = Actual quantity*( actual price - standard price)


    =3 200 * (18 560/3 200 -6)


    =3 200* (5. 8 -6)


    = -640 (F)


    Purchasing department


    B. Direct material quantity variance= Standard price * ( actual quantity - standard quantity)=6 *(3 200 -2 000 *1.5)= $1 200 (U)


    Manufacturing department


    C. Total direct material cost variance


    = Direct material price variance + Direct material quantity variance


    =1 200 - 640 = $ 560 (U)


    or = Actual cost - Standard cost


    =18 560 - (1. 5*6*2 000)


    =$560(U)




  • 第15题：

    Which service is provided by Cisco SMARTnet？（）

    • A、 Investment protection with upgrade discounts
    • B、 around-the clock access to Cisco Technical Access Center
    • C、 Cisco Learning Credits for IT staff development
    • D、 service level agreements to ensure uptime requirements are met

    正确答案:B

  • 第16题：

    What protection method is used in 4F MS-SPRing networks？（）

    • A、 Each fiber has half of its capacity reserved for protection.
    • B、 Two fibers carry their full capacities while the other two fibers are reserved for protection.
    • C、 The signal is sent simultaneously in both directions around the ring. The receiver determines which fiber to listen to based on signal quality.
    • D、 The signal is sent simultaneously in both directions around the ring. The transmitter determines which fiber has the working bit set for the receiver to acknowledge.

    正确答案:B

  • 第17题：

    单选题
    The material used extensively as electrolytic protection around bronze propellers is（）.
    A

    brass

    B

    copper

    C

    lead

    D

    zinc


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    Which of the following chemicals will be used where protection against caustic cracking is required in boiler treatment?（）
    A

    Sodium hydroxide

    B

    Sodium carbonate

    C

    Sodium nitrate

    D

    Sodium polyphosphate


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    Most educators objected to Stoke’s idea because they thought _____.
    A

    a language should be easy to use and understand

    B

    sign language was too artificial to be widely accepted

    C

    a language could only exist in the form of speech sounds

    D

    sign language was not extensively used even by deaf people


    正确答案： B
    解析：
    细节推论题。文章第四段第四句提到，他们认为语言必须基于“说话”，语言是靠声音来调节的，这与C项的“语言只能以说话声音的形式存在”是同义表达。故C为答案。A、B、D三项在文中未有叙述。

  • 第20题：

    单选题
    Kort nozzles are installed around the propellers of some vessels to（）.
    A

    Increase the thrust of the propeller

    B

    Protect the propeller from striking sawyers

    C

    Prevent the propeller from striking barges towed on the ship

    D

    Prevent the propeller from touching bottom in low water


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    What protection method is used in 4F BLSR networks?（）
    A

    Each fiber has half of its SONET capacity reserved for protection.

    B

    Two fibers in the span carry working traffic, while the other two fibers in the span are reserved for protection.

    C

    The signal is sent simultaneously in both directions around the ring. The receiver determines which fiber to listen to based on signal quality.

    D

    The signal is sent simultaneously in both directions around the ring. The transmitter determines which fiber has the working bit set for the receiver to acknowledge.


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    The shear rams of a ship blowout preventer stack are used in emergency well control to（）.
    A

    close and seal around the drill pipe

    B

    close and seal around casing

    C

    cut off pipe inside the preventer stack

    D

    close and seal around drill collars


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful（）.
    A

    to keep the boats covered at all times

    B

    not to leave steel or iron tools lying in or near these boats

    C

    to keep an electric charge on the hull at all times

    D

    to rinse these boats regularly with salt water


    正确答案： B
    解析： 暂无解析

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